Many eons ago...

I paced back and forth in front of the Medbay feeling both nervousness and excitement. "If you keep doing that you are going to burn a hole in the floor." Ultra Magnus said walking over to me. He put his arm around me and spoke in a soft manner. "Everything is going to be alright Optimus."
"Yeah, I know. I'm just very...nervous."
"That's completely normal. You're about to have a sparkling for Primus's sake! But you don't need to worry. You are going to be an amazing sire."
"Thank you, Ultra Magnus." He nodded and left. Suddenly, the door opens and I whip around to see a sight I rarely see, Ratchet smiling at me. He gestures for me to go inside and I dash in. My optics then land on my beautiful sparkmate laying on a berth, holding a bunched up blanket. I walk closer and kneel beside the berth. Elita holds out the blanket and I carefully wrap my arms around it. My optics look down to see a little black and bright yellow sparkling looking up at me with wide optics. "What should we name him?" I ask.
"Well, last time I was at Iacon, I read about these black and yellow creatures called bumblebees. They spread a substance called pollen that helps make these beautiful things named flowers grow and bring such joy."
I smiled, "Our little bumblebee..." The door opened to reveal Ratchet, still showing off his smile.
"Congratulations Optimus."
"Thank you, old friend."
"Now I just need to run some tests to make sure everything's ok with the sparkling." I nodded and handed Bumblebee over to Ratchet. Ratchet took Bumblebee and carefully brought him over to the table and began to run tests. I turned back to Elita and smiled.
"Oh Orion, you make me so happy and now we have our very own sparkling! I can't wait to raise him together." I placed my servos over hers.
"Me too." We both smiled at each other and looked into each other's eyes.
"By the Allspark!" Elita and I quickly turned to Ratchet.
"W-what is it?!" Elita shouted.
"Bumblebee's voice box doesn't appear to have developed properly."
"What does that mean?!" Elita was beyond panicking at this point. And even though it didn't look like it, so was I.
"It means Bumblebee will never be able to speak," Ratchet says as his helm drops. I felt a drop of coolant roll down my faceplate. "But, I may be able to make it so he can still communicate." I looked at Elita and she nodded.
"Do it," I said softly but at the same time hardly. Ratchet nodded and went into the other room with Bumblebee. I kissed Elita's servo, reassuring her that everything would be okay.

[Time Skip]

Elita and I stayed silent for almost the entire time. Not knowing what to say. "We'll get through this," I said looking at Elita.
She smiled, "I know we will." Just then we heard the sound of the doors sliding open, and Ratchet walking back into the room.
"I...did the best I could." I walked up to him and placed my servo on his shoulder pad.
"Thank you, old friend." Once more, arms opened to reveal Bumblebee and his doe eyes. I took him in my arms and cooed at him slightly. I walked back over to Elita, kissing her faceplate, handing Bumblebee over to her. She looked at him and smiled.

She then faced me again and said, "We're going to get through this. As a family."

[Time skip]

Bumblebee is now four vorns old. No one knows about him except for me, Elita, Ratchet, and Ultra Magnus. We kept it a secret so that both the bots' and Bumblebee had a better chance of staying safe. To keep this secret, our living quarters are tucked in a corner of the Autobot base. A high-level of security clearance is needed to enter, that only a few possess. I was conversing with Ultra Magnus about ways to locate the Decepticons and retrieve a relic we desire when a blaring sound is admitted from overhead along with a red flashing light. One of my warriors, Hot Rod, came rushing in.
"Hot Rod, what is happening?"
"Optimus! The base is under attack!" An explosion sounded throughout the base, the sheer force of it making me stumble and grab onto the control panel for support.
"Moondancer! Mirage!" My voice boomed. The two bots ran into the room. "Mirage set up a perimeter around the base and hold them back for as long as you can," Mirage nodded and staggered out. "Moondancer help get all the injured patients from the Medbay to the Ark. Ultra Magnus can you prepare a team to assist Mirage?"
"Yes sir!" Ultra Magnus ran out yelling at some bots to suit up and prepare to attack. I followed soon after, with only one bot on my mind. Another explosion sent me falling to my knees. A scream echoed throughout my spark and processor. I quickly got back on my feet and sprinted to the main hall to see a mech I once called a brother, Megatron. But not only did I see Megatron, I saw Elita. I saw her legs hovering above the ground with Megatron's arm wrapped securely around her neck. Her servos grasped his arm and rocked her helm side to side in an attempt to get out of his death grip. But she couldn't escape her capture no matter how hard she tried.
"Ah, Optimus! I was wondering when you would join us."
My battle mask slid on," Let her go Megatron."
"I'm afraid I can't do that. Now unless you want to see your precious sparkmate's spark ripped out from her very core, I suggest you tell me where you have sent the Allspark off to." Elita looks at me with pleading optics and shakes her head. My optics stare into hers and then I turn them to the floor. My spark aches as I now had to make the hardest decision I would ever have to make. Save my sparkmate, or save all of Cybertron. Coolant starts to leak from my optics, my body feels like all the energon had just been sucked out. "Well, what will it be?" I looked back at Elita to see her mouthing the words 'I love you'. And with that, she dug her shin into Megaton's stomach area and he in return let out a groan and his arm unraveled from her cables. It all happened so fast. She started to run but Megatron pulled out his blaster. I watched frozen in place, Megatron lining up his shot, aiming for her spark.
"Elita!" My helm was drenched in coolant as I reached my servo out to her. Her servo reached for mine but shrunk away as a blast roared throughout the hall. I watched as her peds stammered back, her servo going to her spark until she finally fell back. Her ocean-blue optics drained to a light grey. Her energon stained the floor as it gushed from her wound. I fell to my knees as I looked over her lifeless husk.
Megatron draws out his dagger, "I'm going to kill you where you stand." He pulls his arm back, ready to strike. But moments before he can, the sound of blasters firing gets closer and closer.
"Optimus! Optimus we're coming!"
Megatron stepped back, "I'll have your spark another suncycle." He said converting into a jet and blasting off through a hole in the ceiling. I look into Elita's gray optics and pull her body close. Coolant falls onto her helm as I silently cry.
"Elita no," I whispered. I hugged her close to my spark when a thought came crashing into my processor. Bumblebee.
I quickly dropped Elita and bolted to my living quarters. My peds skid across the floor as I made a sharp turn left. As I dashed down the hall, our room gets further and further into view. But when I'm about 5ft from the door, I stop in my tracks and gasp. The door was blown to bits. There were small pieces of debris falling from the gaping hole overhead. I jump over all the rubble and rush to Bumblebee's crib to see it toppled over. I bent down and picked up his stuffed, now brunt, Cyberdog plush. I frantically looked all around but there was no sign of him. I stumbled and leaned against the wall for support. All those battles. All those times Megatron had just missed my spark. And I have never felt like giving up. Until now.

3rd Person P.O.V
-Set during the confrontation with Megatron-

    Upon hearing so much commotion, Bumblebee awakes from his deep slumber. He stands upon the tips of his peds and looks above the gates of the crib.
"Sire? Carrier?" He questions but all he got in return were energon curtailing screams. Bee may be small for his age, but he was smart. Bee went to the gate and reached for the latch, but he couldn't quite reach it. Bee then leaned further against the gate, which resulted in the crib falling over. Bumblebee fell on his servos and knees but only let out a whimper. He learned from his noble sire that you have to be tough at times. He slowly got back up and made his way out of the door to see sparking cables hanging from the ceiling. Another explosion causes Bee's little legs to shake. He stretched his servos down to the ground, in an attack to regain his balance. Suddenly, he hears a familiar voice shout. "Sire?" He takes a turn to the left, only to be met with a dark figure looming over him. The figure was deep purple and black, with a singular scarlet red eye that held a fierce yet, calm demeanor. The mech also seemed to be sporting a canon that was radiating amethyst. The unknown figure lowered his weapon and bent down on one knee. "Who are you?" Bee's voice whirled. The figure looked taken aback. He hadn't expected such a youngling to know such an ancient language. The taller mech, who was known as Shockwave, picked up the tiny bot and cradled him. Bee looked up at him with pleading eyes. Shockwave carried Bumblebee out of the destroyed chamber and into the hall. Bee turned his helm to the side and saw a symbol resting on the mech's shoulder.

Shockwave reporting in. I have found an unexpected find.

Bring it here. It could be of some use.

The dark lord himself responded. Shockwave made it to the warship, still holding the sparkling in his servos. He went into the control center and kneeled before his master.
"Lord Megatron, I found a sparkling no older than four vorns in one of the living quarters." All the vehicons immediately spun around to survey the scene in front of them. Shockwave opened his servos to reveal the little bot sleeping peacefully. Megaton kneeling as well to take a closer look.
"Who's is it?"
"I do not know. The label of the room had been destroyed in the blast."
"Should we exterminate him, master? I have a few ideas on what we could do." Starscream said with a sinister grin. Megaton rose to his peds and turned to one of the vehicons.
"You there. Prepare a room for the little spark." The vehicon seemed confused but didn't question the actions of his master. Fully knowing he could kill him with just the mere wave of his servo.
"Lord Megaton! You can't be serious!" Starscream shrieked.
"I am serious. The day will come where I will be unable to complete my duties as leader of the Decepticons. And I will need a worthy successor. Shockwave, can you scan him for any injuries?"
"Yes, Lord Megaton." Shockwave turned to leave but the sound of Megaton's voice stopped him.
"And try to cloud his memories as much as possible. We don't need him figuring out who he belongs to." Shockwave nodded and left with dear little Bumblebee in his grasp.

And that's it for the prologue everyone! Sorry if it's too long. I mean over 2,042 words. Dang!
The picture above is not mine. I got it from Pinterest. So credit to the original artist (or) artists.
Hopefully, you guys enjoyed and stay tuned in for more! 😊
Have a super pawsome day everybody!