AC Gang:
Sam, the male New Leaf villager
Viv, the female New Leaf villager
Wil, the male Wild World villager
Cit, the male City Folk villager
Jeff, the male Population Growing villager
Isabelle's ghost

.

Sam sat on his bed. His backpack started squirming around. Since no one else was in the room, Sam unlatched the backpack.

Isabelle's ghost popped out and started breathing. "Geez! Finally!" Isabelle exclaimed.

"Wait, you can breathe?" Sam asked.

"Yeah, so?" Isabelle said.

"Err, nevermind." Sam said. "So what did you want?"

"Well Mr. Mayor, I gotta ask. What are you gonna do?" Isabelle asked. "It started with a simple case of zombies. Now we're out here discovering new universes?"

"To be honest Isabelle, I don't know. But I do know that I'm gonna find the cure to the zombie virus!" Sam said.

"Then what?" Isabelle asked. "We know that Minecraft and Plague Inc exist. What's stopping there being even more? How about a universe full of lava? What're you gonna do if Galeem and Dharkon flood our universe with lava?"

"Err..." Sam said.

"Or a universe of poison gas? Or a universe of nuclear bombs? Or a universe of pure doom?" Isabelle asked. "We can't just go back to living like nothing happened, Mr. Mayor. We could die at any moment! Or, well, YOU can die of any moment."

"Isabelle, I-" Sam began to say, before being interuppted.

"Hey Sam? When are we gonna leave?" Viv asked down the hall. Sam heard her footsteps getting louder. In a panick, Sam quickly bagged Isabelle to hide her.

Viv opened Sam's bedroom door. "Cuz Wil's starting to get annoyed." Viv continued.

"Oh. Right. Err, Viv, you can drive this time." Sam replied.

"Huh? But you never let me drive!" Viv responded.

"Yeah well, I'm letting you this time." Sam said.

"Oh. Well ok." Viv said. She then closed the door and left.

Sam waited a few seconds to be sure then Viv actually left. He then unbagged Isabelle again.

"Just think on it, Mr. Mayor. You know I'm right." Isabelle said.

Sam sighed.

.

Meanwhile

.

Viv sat in the driver's seat.

"Uhh, I've never drivin a car before..." Viv said. She looked at all the controls.

"Hmm... Uhh... Ok... Ah! Here! The Chaos Emerald!" Viv said as she tapped the Chaos Emerald, warping them to another world.

Everyone stepped out of the RV.

"where are we?" Jeff asked.

Jeff looked around. They're in a normal-looking city.

"Is this really Plague Inc?" Jeff asked himself.

"Well, let's ask someone!" Cit said.

Cit walked up to a random guy. "Excuse me, but have you seen any zombies around here?" Cit asked.

"Zombies? Haven't you heard? They got cured aged ago." The guy replied.

"Wait, really?" Cit asked.

"Yeah. In fact, I have the cure on me right now." The guy said. "You want it?"

"Oh, yeah, thanks." Cit replied.

"Well... I guess we never needed to make a cure." Jeff said. "I guess it was always there. We just didn't have it."

.

1 week Timeskip

.

"A virus from another world, huh?" Marshal said. "That's what we were sick from?"

"Man, that's kinda scary." Bones said.

"Huh? How come? It's over now." Marshal said.

"Yeah, but... it came from an unknown world." Bones said. "If one exists, then how many others can exist?"

Sam watched the conversation happen from in his office. Isabelle floated up to Sam.

"Told you this would happen, Mr. Mayor." Isabelle said. "They know other worlds exist now. As long as they know that, they're gonna be scared."

Sam sighed.

"But wait... What if they DIDN'T know?" Sam asked himself.