At the same time, in (what was left of) London, someone else was enjoying their day. Well, as much as he could, given the circumstances. As the evening sky and the full moon hovered over the destroyed city, he really began to think about his life since he experienced something he never thought he would experience since the invasion: failure. Looking up at the moon and seeing the giant crater in the center of its face reminded him of that night. The night he lost to those imbeciles. 

'All that work... all that planning... all that effort... I almost won. I almost did it. I almost made humanity an extinct species. And I would've gotten away with it if it weren't for those humans... and now, I'll never achieve my goal of making zombies this planet's sole inhabitants...'

After completing his evening walk, he finally returned to his home. Waiting for him at the door was his friend and minion, who was named the most original of names.

"Minion," he told him in a thick British accent as he removed his coat, "hang this up and pour me some tea."

"Yes, Edgar," Minion replied as he grabbed at the coat.

The coat was still being gripped by its owner as a deathly glare was pointed in Minion's direction.

"Er, sorry. I mean Master."

"After all this time, I'd think you'd finally remember to stop calling me that."

"Yes, Master. I assure you it won't happen again."

"Good."

Edgar released the coat, allowing Minion to hang it up and start pouring the tea.

"I tell you, Minion, it's been quite a boring day," Edgar continued as he sat in the chair next to the lit fireplace.

"I'm sure it was, Master," Minion replied as he handed the cup over.

"I just haven't felt the same since that night... like my life has no purpose anymore."

He then took a sip of his tea and deeply sighed.

"I don't even deserve the title of 'Dr. Zomboss' anymore..."

He paused for a second before looking at Minion sternly.

"That still doesn't mean you get to call me 'Edgar', either."

"Understood, Master."

Zomboss sipped more of his tea as he stared at the fireplace in thought.

"Master," Minion piped up, "if I may make a suggestion, why don't you just try and attack the humans instead of complaining about it?"

"I made a promise, Minion. I've never broken a promise, and I never will."

"So you're going to let your morals stop you from achieving your goal? Why does the zombie that single-handedly caused history's biggest genocide even have morals in the first place?"

"I wasn't always a monster. I'd like some of my former humanity to remain."

"If you say so, Master..."

"Speaking of those humans, how about we check up on them before I head to bed."

He turned on his television and saw an image appear on the screen.

The humans appeared to be in their garage, standing next to a recreational vehicle. Some of the audio was fuzzy, but some parts could be made out.

"We can use her to go back in time to before..."

"...the technology to create a time machine...using it to stop a zombie apocalypse..."

Zomboss's decomposed heart dropped into his pelvis. He then proceeded to remove it from down there and reinsert it into his chest, mumbling about how he's sick of that happening.

"Did I hear them right?" Minion asked in shock.

"I don't know, Minion," Zomboss replied. "But it sounds like they plan to use that device to travel back in time!"

"To do what?"

"I think they may have said something along the lines of going back to before I started placing zombies on Earth!"

"Are you sure?"

"It's the only logical conclusion I can make!"

"Master, look!"

Zomboss looked at the screen and saw them all enter the vehicle.

"This is bad, Master! If they go back in time and stop you from making zombies, we'll always have been losers, not just for the last few years!"

"Thanks for that, Minion. But you do have a valid point. If they go back in time to change that, they'll make it like I never killed any humans!"

"What do we do?"

Before Zomboss could answer, a flash of light could be seen from the TV, revealing the vehicle to be gone, leaving a large blue cloud in its place.

"What is that?" Minion asked in curiosity.

"I'll be...!" Zomboss gasped in response. "It's a time cloud!"

"A what?"

"You know how automobiles leave exhaust behind when they travel?"

"Yeah...?"

"Well, time machines leave time clouds behind when they travel. It's all the data used to take them to their destinations left behind as waste, as it's no longer needed."

"Interesting..."

"Yes, but we can use this to our advantage! Get your coat on!"

"Huh? Why?"

"If we hurry, we can get to that cloud before it dissipates! We can scoop some of that cloud up and use it as fuel for my own time machine, as well as using the data to allow us to travel to exactly where and when they went!"

"Hold up; you have a time machine??"

"What do you take me for, an amateur scientist? Of course I do! Now let's get to the teleporter!"

"Yes, Master!"

As Minion rushed to get his coat on, Zomboss stared at the television screen and a smile grew on his rotten face.

"You want to alter history?" he asked. "Fine. Let's alter history!"

"Who said I wanted to alter history?"

"For God's sake, Minion!!"

*          *          *

The humans all felt sick to their stomachs as PENNY came to a stop. Alex's vision was a little fuzzy, and none of the other humans looked any better. With the exception of one.

"Alright!" Crazy Dave told them all with joy as he rubbed his hands together. "Let's go get some tacos!"

He proceeded to get out of the vehicle and close the door behind him.

"I didn't know...time travel could be this...nauseating..." Fred said with deep breaths.

"Mommy, my tummy hurtz!" Emma whined as she grabbed her tummy in pain.

"I know, Sweetie," Josie replied as she picked her daughter up. "My tummy hurts, too."

"It's times like these where I'm glad I don't have a stomach," Peashooter quietly told the other Plants, who all silently agreed.

"Well, let's just get those tacos," Alex suggested. "That'll make it all worth it!"

"I guess," Fred said with a shrug as he opened the door.

As soon as he turned the handle, though, a gust of wind made the door fly right open, causing what appeared to be sand to fly into the RV!

"What the heck?" Josie asked nobody in particular.

"Uh, guys?" Fred suddenly told them. "You may wanna look at this!"

Everyone then went to the door to see what was going on. When they saw it, though, they gasped in shock.

There was nothing but hills of sand as far as the eye could see, except for what appeared to be several triangular buildings in the distance.

"Welcome to Ancient Egypt!" PENNY suddenly announced. "Please wait 4500 years for your tacos to be ready... more or less."

"Wait... did she say ANCIENT EGYPT??" Alex exclaimed in panic. "I thought we were supposed to go back to before we ate the tacos!"

"Well," Josie said as she rubbed the back of her neck, "we technically ARE at a time before we ate them!"

Suddenly, Dave came into view, looking at the ground as if searching for something he dropped.

"I'm sure they're around here somewhere..." he murmured.

"Dave, we're in Ancient Egypt!" Fred told him.

"Really?" Dave asked as he looked up. "Hm. That doesn't smell right..."

"C'mon. Get back in and let's try again!"

"Sounds good to me!"

Dave entered PENNY through the side door and climbed into the driver's seat. After typing out the destination, though, the screen turned red.

"I'm sorry; there is an insufficient amount of fuel."

"What??" the Johnsens all gasped.

"Well, this is awkward," Dave said with a nervous chuckle.

"So... WE'RE STUCK IN ANCIENT EGYPT FOREVER???" Josie screamed as she grabbed and shook Dave's shoulder.

"No, not forever," he replied as he pried her hand off. "PENNY can create her own fuel, kind of like she's charging her own battery. So all we have to do is wait for her to make enough fuel."

"How long will that take?" Alex asked.

"Not long. Just around a month."

"A MONTH????"

"Is that a problem?"

Everyone then groaned in anger as they sat down.

"So we're stuck here, in Ancient Egypt, for a month..." Fred said quietly. "Can we even survive for that long?"

"Well, if you want a diet of peas and mashed potatoes," Sunflower replied as she looked at Peashooter and Potato Mine.

"And I can turn the water in the air into a filtered liquid form," PENNY added, "so you'll have an endless supply from the sink over there!"

"So, I guess we'll just have to be patient," Dave concluded. "I mean, at least we'll finally have a break from the zom-"

Before he could finish his thought, a large explosion occurred next to PENNY, shaking the entire vehicle and knocking everyone to the ground! After the rocking stopped, everyone looked around to make sure they each were safe. 

"What the heck was that??" Josie asked as she tightly held on to Emma, who was covering her ears and starting to cry.

"Well... well... well..."

A familiar voice boomed outside the RV. A voice they never thought they would hear again. Alex quickly stood up and ran outside, where he saw a giant machine before him.

This machine was around 40 feet tall and looked like it had a giant spider-type body with a glass dome on top of it. Inside that dome was a familiar, big-headed face. Metaphorically and literally.

"You've got to be kidding," Josie groaned as she stuck her head out the door and looked at the machine.

As soon as she said that, the whole structure lowered until it was on the ground. It was only then when a hatch on the front opened up, revealing the silhouette of the figure in question. He then stepped outside and in front of Alex, sporting a giant, rotten grin.

"Long time no see, Mr. Johnsen," he told Alex as he extended his hand. Alex crossed his arms without breaking eye contact.

"Hm. It would seem that your victory has made you arrogant," the big-headed zombie commented as he stopped smiling and lowered his hand.

"What are you doing here, Zomboss?" Alex asked coldly.

"I'm here to stop you, of course."

"I'm sorry?"

"Did you really think you could just travel back in time and stop my plans of world domination from ever taking ground?"

"I'm sorry, I don't know what you're-"

Alex then lost his breath as the zombie quickly wrapped his hand around his throat and squeezed tightly.

"DO NOT LIE TO ME!!" he screamed as he moved his face closer to Alex's.

"GET YOUR UGLY HANDS OFF OF HIM, YOU MONSTER!!" Josie screamed as she pointed Peashooter at Zomboss.

The zombies' leader turned his eyes toward Josie, as well as Peashooter, and grew a small grin. He then let Alex go and backed up, though Josie still had the Plant aimed at him.

"I know I promised I'd leave you alone," he continued as he adjusted his signature necktie, "but that was before you decided to pull this little time travel stunt. Killing all those humans was my biggest and greatest feat, and I'll be damned if I'm going to sit there and let you wipe it away like nothing ever happened!"

"Zomboss, I'm telling you we weren't going to try to do anything like that!" Alex explained as he rubbed his throat.

"Alright," Zomboss told him as he crossed his arms. "I'll bite. Why did you decide to travel back in time if not because you wanted to stop my zombie army?"

"We... wanted to re-eat a bunch of tacos."

"Come again?"

"We had some tacos that were really good and... well... we wanted to go back and eat them again."

Zomboss blankly stared at him before a smile cracked on his face.

"And here I thought you were smarter than that, but I guess even you couldn't come up with a better lie."

"I'm not lying!!"

Zomboss was about to grab for Alex again, but before he could touch him, he was smacked in the head by a giant green ball! He then backed up, rubbed his head, and glared at Josie and Peashooter, who did not look very happy. 

"Well, I hope your little attempt at stopping me was worth it," he finally told them all. "Because as of now, we're officially back at war with each other! And I won't rest until I finally have all your heads on my plate!"

Zomboss then backed up into his machine and the door started to close.

"I'll give you a head start," he concluded as the door closed. "Good luck."

The door then closed and the machine rose started to hover in the air before quickly flying upwards towards the sky. Alex and Josie just stared upwards for a few seconds before turning back towards each other in disbelief.

"Well, that's just perfect," she said as her eyes started to water.

Alex walked over to her and hugged her tightly.

"We'll be fine," he told her. "We're always fine. C'mon, let's get out of the sand."

The couple walked back inside, where everyone was staring at them.

"Just when you thought this couldn't suck any more," Fred told them as he slowly shook his head.

"Why are you crying, Mommy?" Emma asked as she looked up at her mom with her giant eyes.

"I'm just scared, Honey. But don't worry; Mommy won't let anyone hurt you!"

"So I guess we'll have to deal with zombies, after all?" Dave asked Alex, who nodded in response.

"Well," he then said as he popped his knuckles, "I guess it's just like old times, then! Now, c'mon! Let's get out of here and try to get away from that freak!"

He then started the engine and drove forward into the endless desert. Alex sat next to Josie, who as holding Emma close to her. It was safe to say this is not what he thought his day was going to be like.