Get ready for the feels because this is a big one!

-----

After becoming safe Colonel Mace as well as other troops entered the building followed by Rita, the Doctor and 'Martha'. "East and north secure. Doctor, Stone?" Mace asked running down a hall. The Doctor quickly pulled out the phone whispering into it while he and the Stone pulled out their sonics. "Donna, hold on. We're coming."

"Shouldn't we follow the Colonel?" 'Martha' questioned.

"Nah, you, me and the Stone, Martha Jones." He started to scan the area with Rita the both of them finding the gene direction of the real Martha's whereabouts. "Just like old times."

"Alien technology, this-a way!" The Doctor took the lead Rita catching up to walk along side him scanning around following the signal.

They continued down in the factory getting deeper and deeper until it was just the two Time Lords with the clone Martha following them. The lights in the corridor flickered on as they entered. "No Sontarans down here." The Doctor hummed looking about. "They can't resist a battle." He found a door and soniced it. "Here we go."

Entering they found Martha lying in a diagonal bed with a sort of crown like headwear obviously sending memories and keeping the clone alive. The Doctor and Rita both ran over checking Martha and making sure she was okay. "Oh, Martha, I'm so sorry." The Doctor checked her pulse. "Still alive." He nodded to Rita who sighed of relief.

Hearing a gun the Doctor looked over his shoulder seeing the fake Martha holding one to his head. Knowing that she wouldn't shoot he turned back not caring. "Are we supposed to be impressed?" He asked.

"Wish you carried a gun now?"

"Not at all." He replied turning around and circling the clone. "The Stone would never forgive me." He nodded over to her as she stood next to the sleeping Martha watching.

"I've been stopping the nuclear launch all this time."

"Which is exactly what we wanted," Rita spoke up.

"We needed to stop the missiles, just as much as the Sontarans." He explained. "We're not having Earth start an interstellar war. You're a triple agent."

"When did you know?" She frowned still pointing the gun at him.

"About you? Oh, right from the start." He shrugged explaining. "Reduced iris contraction, slight thinning of the hair follicles on the left temple. And, frankly, you smell." He looked at her slightly disgusted. "You might as well have worn a T-shirt saying clone." The Doctor then walked over standing directly behind the real Martha. "Although, maybe not in front of Captain Jack. You remember him, don't you?" He raised a brow at her. "Because you've got all her memories. That's why the Sontarans had to protect her, to keep you inside UNIT. Martha Jones is keeping you alive." He pulled the device of Martha's head as she gasped while the clone collapsed. He kicked the gun away while Rita held Martha trying to calm her down.

"It's okay." She reassured her. "We're both here." She hugged the terrified woman

The Doctor then hugged her as well. "We've got you. We've got you."

"There was this thing, Doctor, Stone," she tried to explain through her breaths. "This alien, with this head." The phone then rang and the Doctor suddenly remembered Donna on the ship.

"Oh! Blimey, I'm busy." He muttered to himself answering. "Got it?"

"Martha, you okay?" Rita worryingly asked. She nodded hugging the Time Lady again who sighed with relief.

"Take off the covering." The Doctor explained to Donna. "All the blue switches inside flick them up like a fuse box, and that should get the teleport working."

"Oh, my God." Martha gasped staring at the struggling clone. "That's me."

"Yeah..." Rita scratched the back of her neck. "That's the 'alien, with this head'." She quoted her from earlier. "Doctor give Martha your coat she's freezing. The Doctor threw his coat over to Rita who caught it then helped Martha out handing her the coat before she ran over to the Doctor helping him with the teleport.

The two sat side by side messing with the wires. "It's days like this where I don't regret a thing." Rita chuckled.

"What do you mean?" The Doctor raised a brow.

"Just..." she hummed thinking. "Like I don't ever regret going with you when you asked if I wanted to sneak into the TARDIS back when we were practically kids."

"You think I ever do?" He raised a brow at her wondering.

"When I get all stressed, annoying and angry, yeah." She shrugged.

"You honestly think that?"

"Sometimes but then I'm like 'nah'." She laughed making him chuckle.

"When we're back on the TARDIS..." The Doctor paised for a moment. "I need to show you something."

"Don't tell me it's a surprise." She groaned. "Do you never listen to me, Doctor?"

"I do. But I enjoy teasing you more." He smirked.

"Of course you do." She rolled her eyes focusing back on the wires of the teleport.

Hearing Martha speaking to the clone the Doctor jumped up looking through the gap. "The gas!" He shouted. "Tell us about the gas!"

"They're the enemy." The clone jolted away from the pair as they ran out of the teleport to listen to the clone.

"Then tell me," Martha begged her clone. "It's not just poison, what's it for? Martha, please."

Staring at the real Martha for a moment she started to mumble quietly. "Caesofine concentrate. It's one part of Bosteen, two parts Probic five."

"Clonefeed!" The Doctor and Rita shouted looking at each other, the Doctor hitting his forehead as Rita raised her hands. "It's clonefeed!"

"What's clonefeed?" Martha frowned.

"Like amniotic fluid for Sontarans." The Doctor explained sonicing the wires. "That's why they're not invading. They're converting the atmosphere, changing the planet into a clone world. Earth becomes a great big hatchery."

"Because the Sontarans are clones, that's how they reproduce," Rita explained clearer for Martha to understand. "Give them a planet this big and they'll create billions of new soldiers. The gas isn't poison, it's their food."

They both ran back to the teleport and continued to mess with the wires until they heard the whispers of Donna through the phone. "Doctor." She hissed. "Stone. Blue switches done." they beamed finishing what they were doing, "but they've found me." She said in horror.

The Doctor pulled Rita away outside of the teleport and soniced it. "Now!" Donna then appeared in front of them hugging the Doctor as Rota ran over to the teleport pressing a few buttons so the TARDIS would reappear back on earth.

"Have I ever told you how much I hate you?" Donna asked the Doctor.

"There TARDIS is back nice and safe." Rita wiped her hands before she started to be crushed by Donna hugging her. "Yeah, I hate you as well Stone." She laughed.

"Can't breathe... need to breathe..." Rita panted after Donna let her go. "Thanks, Donna." She patted the woman's shoulder. "You okay?"

"Yeah." She nodded.

"Right, now." The Doctor looked over at Martha. "Martha, you coming?" He asked stepping into the teleport.

"What about this nuclear launch thing?" She asked looking at her phone.

"Just keep pressing N." He explained. "We want to keep those missiles on the ground."

Donna looked at Martha then the clone confused. "There's two of them."

"Yeah, long story." The Doctor said.

"I'll explain it to you later Donna," Rita told the woman.

"Here we go. The old team, back together. Well, the new team."

"May I remind you the last time you had a reunion with old companions you hated using the word team?" Rita smirked enjoying the teasing.

"Are you ever going to let that go?" He asked her.

"Sweetheart as your girlfriend slash best friend it is my job to repeatedly remind you about your slip ups." She laughed.

"Did they always do that?" Donna asked Martha.

"What did we do?" The Doctor looked at Donna, not understanding.

"That." Both companies pointed between the Time Lords. "Talk about something neither of us know about in banter sort of way with a slight hint of flirting." Martha laughed.

"Oh well." Rita looked at the floor her cheeks becoming red.

"Anyways Allons-y!"

"We're not going back on that ship!" Donna cried out.

"No, no, no. No." The Doctor shook his head. "We needed to get the teleport working so that we could get to..." he hit the teleport transporting them...

"Here." He said finishing his sentence looking around. "The Rattigan Academy, owned by..." he looked up seeing Rattigan pointing a gun at them.

"Don't tell anyone what I did." He cried shaking. "It wasn't my fault, the Sontarans lied to me, they..." Rita rolled her eyes bored of seeing a gun today she marched forward ripping it out of his hand. "The next person I see with a bloody gun is going to get thrown in a supernova personally by me," Rita grumbled throwing it over into the pool.

"Well." The Doctor looked at her blinking for a moment before following the blonde out into the academy laboratory.

"You know, that coat sort of works," Donna said to Martha.

"I feel like a kid in my dad's clothes." She laughed.

"Don't say that in front of the Stone." Donna laughed. "The Doctor would never hear the end of it, his face would be horrified and she would never shut up about it!"

----------------------------------------------------------

"Right then." Rita looked around. "If only we had lots of equipment we could use." She grinned at the Doctor. "Come on." She laughed running around the room collecting different equipment.

Donna and Martha later walked in with Rattigan as they built the device to clear the air.

"That's why the Sontarans had to stop the missiles." The Doctor explained to them. "They were holding back. Because caesofine gas is volatile, that's why they had to use you to stop the nuclear attack. Ground to air engagement could spark off the whole thing."

"What, like set fire to the atmosphere?" Martha asked.

"Yeah." He nodded. "They need all the gas intact to breed their clone army. And all the time we had Luke here in his dream factory. Planning a little trip, were we?"

"They promised me a new world." He shakily replied.

"You were building equipment, ready to terraform El Mondo Luko so that humans could live there and breathe the air with this."

"An atmospheric converter." Rita added. as the Doctor switched on the device then picked it up running out of the room.

They ran into the garden and he placed the device down on the grass.

"That's London." Donna gasped. "You can't even see it. My family's in there."

"We'll sort it out Donna, I promise you." Rita patted her shoulder then bent down to help the Doctor.

"If we can get this on the right setting." He mumbled then stepped back with Rita both of them holding the remote.

"Doctor, Stone, hold on." Martha stopped them. "You said the atmosphere would ignite."

"Yeah, we did, didn't we?" He said then looked at Rita who nodded. They both pressed the button and watched the energy pulse zoom up into the gas clouds which then ignited. Lacing their fingers together as well as crossing them the Doctor and Rita watched in hope that their plan would work

"Please, please, please, please, please, please, please." They muttered to themselves.

Suddenly the fire disappeared and the bright blue sky shone through laughing Rita jumped up and down hugging the Doctor as the rest of them blinked.

"They're geniuses." Rattigan breathed

"Just brilliant." Martha beamed.

Rita then stopped hugging the Doctor knowing it wasn't over yet she helped him collect the equipment. "Now we're in trouble." He muttered running back in Rita not letting go of his hand.

Bringing the device into the teleport his face fell looking at the three humans, not even daring to look at Rita, he couldn't right now. "Right. So, Donna, thank you for everything." He forced a smile at the woman. "Martha, you too. Oh, so many times. Luke, do something clever with your life." He then blinked looking at Rita. "Stone... I love you so much, you know that don't you?"

It sounded like... No, he could, he wouldn't dare try and leave her here. She thought, if he was going then so was she, she swallowed hard trying not to break down straight away. "Don't you dare." She shook her head blinking back tears stepping closer to him. "I'm not letting you."

Donna blinked realising what was going on. "You're saying goodbye."

"Sontarans are never defeated." He explained. "They'll be getting ready for war. And, well, you know, I've recalibrated this for Sontaran air, so..."

"You're going to ignite them."

"You'll kill yourself." Donna gasped at the thought.

"Just send that thing up on its own." Martha blinked back her own tears. "I don't know. Put it on a delay."

"He can't." Rita looked up at them swallowing thickly her eyes glassy with tears. "Because that's who he is. He's the Doctor and he gives them a chance. It's what he does. And I stay right beside him." She stepped back towards the Doctor. "I'm going with you Doctor and I don't care about what you say because I am not letting you go up there all on your own."

"No-"

"Doctor just listen please." She cut him off taking his hand as he slowly placed down the device taking the other in his. "I love you so much." She cupped his cheek. "And I'm staying right beside you until the end, I promised myself that."

"Stone please stay here." He begged. "You have a regeneration take the TARDIS and do what you do best, help people."

"I can't do it without you, Doctor." She stared into his eyes. "I can't be the last because it terrifies me and you know that it would break me, I wouldn't be the same." The Doctor swallowed. He couldn't betray her trust, not with this, he knew it would definitely break her, he didn't want her to remember him for betraying her and forcing her to stay. "I can't Doctor."

"I love you so much." He tightly hugged her tears slipping from his eyes as he then kissed her with all of the love he couldn't put into words. "I-" he swallowed. "I know it's useless now but you need to know." He reached into his pocket and pulled out a box that looked light grey almost silver slightly sparkling in the dim light around them with Gallifreyan engraved looked up at her his hands slightly shaking.

"Is that..." she stared at the ring in the box seeing the white stone glistening in the light knowing only one stone that looked like that. "That's an amalgamate ring..." she looked at him her eyes widening slightly.

"It was my grandfathers." He swallowed. "After my grandmother died he never remarried for obvious reasons, my father didn't give it to anyone because he never found someone worth giving it to and by that time arranged marriages were the new thing along with looms, so he gave it to me."

"Were you..." she blinked swallowing a little. "Were you going to ask us to unite..?"

The Doctors eyes widened seeing the slight worry in her eyes and quickly look up at her after his eyes wandered to the floor. "I wanted to ask you for a while" He admitted. "But I never asked and now it's too late." He tucked a strand of hair behind her ear trying to understand the thoughts swirling around in her mind.

"Sweetheart it's never too late." She looked into his eyes completely forgetting about the three humans now tearful themselves standing in the room.

Swallowing hard the Doctor took her hand looking deep into her eyes. "Dame Stone of Oakdown, will you accept this amalgamate ring and unify with me?"

"Lord Doctor of Lungbarrow..." she looked into his eyes searching them as his own searched hers. "I accept." The Doctor sniffed back his own sobs as he carefully took the ring out of the box before placing the box into his pocket, gently he slipped the ring onto her finger watching the white diamond sparkle along with the tiny diamonds engraved around the centre of the silver band wishing that he had asked her sooner and in better circumstances. But this was the Doctor and the Stone the last of the Time Lords the both of them living impossible dangerous lives together. The Doctor cupped her cheek then slowly leant in to her closing his eyes, softly and slowly kissing her lips enjoying the moment with her, his arms snaking around her waist pulling her closer before resting his forehead against hers for a moment looking deeply into her eyes.

Taking her hand and the device they looked back at the three humans, Donna and Martha looking heart broken. The Doctor pressed the button on the teleport tightly holding the Stones hand with his other the machine between them both, transferring them to the ship.

"Oh, excellent." They saw Staal beaming at them.

"General Staal, you know what this is." The Doctor said holding his hand on the device Rita's under his. "But there's one more option. You can go. Just leave. Sontaran High Command need never know what happened here."

"Your stratagem would be wise if Sontarans feared death, but we do not. At arms." He ordered.

"Don't think we won't do it, Staal," Rita warned.

"If it saves the Earth, we'll do it." The Doctor hissed

"A warrior doesn't talk, he acts."

"We are giving you the chance to leave." The Doctor warned.

"And miss the glory of this moment?" He snapped.

"All weapons targeting Earth, sir. Firing in twenty."

"We're warning you." Rita glared at him.

"And I salute you both. Take aim."

"Shoot us, we're still going to press this." The Doctor shouted. "You'll die, Staal."

"Knowing that you both die too." He almost laughed.

"Firing in fifteen."

"For the glory of Sontar." He started. "Sontar-ha. Sontar-ha. Sontar-ha. Sontar-ha." They all chanted.

"We'll do it!" Rita shouted slightly shaking.

"Then do it!" Staal shouted at them.

The Doctor looked at Rita the both of the thickly swallowing, another tear escaping her eye before... they teleported back? Falling to the floor out of confusion blinking not understanding what happened the Doctor pulled Rita practically onto his lap tightly hugging her burying his face into her hair as she gave shaky breaths. The two companions spotted them running over Martha sitting beside them hugging them both tightly after they had calmed down while Donna walked over hitting both of their arms then looked at them worryingly. Rita went back to hiding her face in the Doctors neck shaking. "Shush." He cooed into her mind trying to comfort her. "I got you." He whispered into her mind holding her as close as possible. "I'm here love, I got you." He gently rocked them both holding to his chest hearing and feeling her quietly sob, something that broke both of his hearts in two, she thought they were both going to die for good there.

----------------------------------------------------------------

Back at the TARDIS, Martha gave the shaken Time Lords some time and space to think, how ironic. Donna had gone how to check on her family. The Doctor and Rita sat in the library in their usual position the Doctor and Rita curled up together with his arm around her. He rested his head on hers staring down at her hand softly smiling at the thought. Lightly coughing he gained her attention as she looked up at him. "Do you..." he thought of the words. "Do you still want to?"

Her eyes widened at the question. "Do you not?" She asked worried about his answer.

"If you don't" he hastily replied trying to understand the thoughts going through her head. "I won't force you."

"Doctor." She looked up at him her soft eyes staring into his. "Everything I said was true, I love you so much, I know it's a massive step and I'm scared, but I know you will be there beside me and I will be right beside you sweetheart." She cupped his cheek.

Softly smiling he took her hand off his cheek lightly kissing it. "I'm sorry it wasn't the best of situations and that my timing is horrible."

"You did it your way and that makes it so beautiful, no plan, no thought you just went along with it and that is your way." She sighed resting her head against his chest closing her eyes, happy that the both of them were still alive.

A couple of moments past the Doctor holding her close. "I can't believe it." He then mumbled into her hair.

"Hmm?" She tilted her head up looking at him, she raised a brow edging him on to continue.

"You agreed to be my wife."

"Of course I did." She warmly smiled at him. "I love you don't I?" She smirked.

"Hopefully as much as I love you." He kissed her forehead. "love you."

"Love you too Doctor." She breathed deeply closing her eyes and smiling.

----------------------------------------------------------------

"How were they?" Martha worryingly asked Donna as she stepped into the TARDIS, her eyes stained with leftover tears. She glanced at the Time Lords smiling softly at them standing together no longer looking terrified and scared by now full of love for one another, not that they did not have that look in their eyes when they looked at each other before, but now it was even stronger, even when they weren't even glancing at the other Time Lord. "Oh, same old stuff." Donna shrugged. "They're fine." Sighing she changed the topic. "So, you going to come with us? We're not exactly short of space." She joking gaining a laugh from Rita and Martha the Doctors lip twitching into a small smile.

"Oh, I have missed all this, but, you know." She looked around happily then at the Time Lords saddening. "I'm good here, back at home. And I'm better for having been away." She nodded at them. "Besides, someone needs me. Never mind the universe, I've got a great big world of my own now, just like you have a great big world as well Stone." She laughed hugging the Time Lady, suddenly the TARDIS doors slammed shut on their own and the time rotor began to move throwing the four of them around the console.

"What?!" The Doctor looked in alarm.

"How..?" Rita stared at the console, moving to the scanner trying to find out what was going on.

"Doctor, Stone, don't you dare!" Martha cried holding on to the TARDIS beside Donna.

"No, no, no." The Doctor shook his head. "We didn't touch anything. We're in flight. It's not us." He explained.

"Where are we going?" Donna asked holding on as tight as she could.

"I don't know." Rita stared at the monitor going to her last resort and hitting it wincing a little since she didn't enjoy hurting the TARDIS.

"It's out of control!" The Doctor tried desperately to contra the TARDIS.

"Doctor, Stone, just listen to me," Martha shouted at them begging. "You take me home. Take me home right now!"

-----

So the Doctor and the Stone / Rita are engaged! I've been holding this off for a good while but also wondered if it was too soon in the series for them to be engaged because I wanted Rita to explore and find her new personality etc in the next incarnation of herself without the news of an engagement haunting her. I'm sorry to anyone that would have wanted the 'moment' to be longer and not tied to the main Doctor Who story. I decided to do it this way since the Doctor has such a chaotic life and i feel like it would be something that he would just do.