(No one's POV, In earth 6721.)

As you and Stevia finishes making sandwiches for the Tri-state area avengers, Tony, Bruce, Ruby and Yang walks in to ask you a question but then notices Phineas, Ferb and the rest of the group.

Tony: "Hey Phineas, what are you doing here?"

Phineas: "Just helping out Sunset and Leahcim with their dimensional teleporter."

Ruby looks at Phineas, Ferb and their friends with a confused look.

Baljeet: "Is there something wrong?"

Ruby: "Aren't you a little young to be making whacky and dynamic inventions?"

Phineas: "Yes, yes we are."

Rick then hits Ruby at the back of her head.

Yang: "What did you do that for?!"

Rick: "Never ask the kid that question."

Ruby: "Noted."

Bruce: "Why didn't they ask for our help?"

You: "You, Tony, Rick and our version of Reed were busy with your own projects at the time and the alternate universe of Reed Richards said they're running out of time and decided for a small group to save his world."

Tony looks in confusion as Rick looks in curiosity.

Tony: "Mind if we have a look?"

Phineas: "Sure."

Tony, the Tri-state area avengers, Stevia, (Y/N) and Bruce go to Leahcim's room to see the teleporter.

XXXXX

(In earth 9412, Dean's POV.)

A lot has happened on Earth.

Luckily none of those freaks came out.

I look at Cass who's talking to the Doctor, Wade, Luke and Velvet so I decided to walk over.

As I walked over them, I tripped over a stone and accidentally pushed Cass, resulting in him kissing the Doctor on the lips.

Cass and the Doctor then look at each other and blush.

Cass: "I.. I'm sorry that I..."

The Doctor then kisses Cass and after a minute, they part as they blush and smiles a bit.

Doctor: "I liked it."

I then turn around to see Sammy.

Me: "Sam, around the shops near the tracks, I found some salt."

Sammy: "I found some silver knives for any Zombified monsters."

Me: "Well, better keeping looking for supplies."

Just as Sammy was about to go, he turns around and accidentally kisses Kitty.

Kitty: "Sorry, I wasn't looking where I was going."

Sammy: "It's ok, I wasn't looking either."

Kitty and Sammy start to blush a bit as she twirls her hair a little.

Kitty: "I know we've known each other for a few days... but I actually liked the kiss."

Sammy and Kitty then starts kissing again until a large noise was heard.

(Earlier, Leahcim's POV.)

Me: "How much further is your base?"

Figure #1: "Just another few hundred yards."

Sunset: "I hate to ask but are you the last beings in the world who hasn't been infected?"

Figure #2: "No, there are others here... but Magneto is one of the last ones with any special gifts... until you came along."

As we stopped in front of a train, I realised something.

The masked and cloaked figures voices are deeper.

They probably have voice changers on their masks.

Magneto moves a train aside as the group go inside and Magneto closes the gap with the same train.

Magneto: "I fashioned this refuge out of a railway tunnel. It's not perfect but there is workable lights... and toilet facilities... and a place where we can store our food."

Me: "And the infected don't know you're hiding here?"

Figure #2: "No... but we're afraid that they'll find us eventually."

Sunset: "How long have you been living like this?"

Figure #1: "Three days ago... or was it two? I apologise for losing track of how many days we were in... but I believe the first ones to be infected was actually three days ago."

Me: "What?"

Magneto: "Don't worry, everyone. It's only us..."

Figure #2: "And we found some friends."

???: "Magneto, are you insane?!"

???: "they could be a couple of Shapeshifters!!"

Me: "Easy, we're not... did you call us Shapeshifters?"

???: "Stay still."

The man in the jacket put a silver bullet on my cheek.

Then he put the bullet on Sunset's cheek.

He put the bullet in his pocket.

???: "Not Shapeshifters."

???: "Hello, I'm the Doctor. This is Dean Winchester & his brother Sam, Castiel, Katherine Pryde, her son Peter Rasputin-Pryde, Velvet & Wade Danielson."

Two zombies then come out of a room.

Just I was about to attack, one of the figures grab my arm and shakes it's head.

Figure #1: "Don't worry, they are what you think but they aren't hungry for flesh... in fact they aren't actually hungry for anything."

Dean looks at us with a confused look.

Dean: "Ok, I give up. Why do you two look so familiar?"

Me: "What do you mean by that?"

Figure #2: "I think what Dean means is..."

The two figures then take off their cloaks and masks to reveal themselves as...

XXXXX

(No one's POV.)

Leah: "Why do you look like us?"

Both Sunset and Leahcim look in surprise.

Sunset: "No way."

Leahcim: "Shut the front and back doors... You're.."

Sunset: "Us."

SunShim: "It appears to be."

Leah: "Ok, spill."

Leahcim takes a deep breath.

Leahcim: "This is going to sound weird but we are your counterparts from another dimension and your fantastic four tricked us to coming here."

Wade: "What?"

Katherine Pryde: "What is he talking about? I don't even know what any of that means."

Magneto: "Kitty, this is serious."

Castiel: "Are you saying that you opened up a gateway from your world to ours... giving them a chance to reach your reality?"

Leahcim: "Oh lord, you're right! He gave us those designs so we could make our way here but there's no reason it can't work the other way too!"

Sunset: "We have to get back to the Baxter building! We have to stop them from using the bridge we opened up!!"

Magneto: "Oh dear... it's much too late... don't you understand?"

Your world's already dead.

XXXXX

(Back at earth 6721.)

The dimensional portal starts to glow and flash.

Isabella: "Guys, something's coming through."

The light then fades as they see the Frightful Four.

Yang: "Great. Because things weren't bad enough."

Mr Fright: "Torch?"

Torch: "Relax, their toast."

Torch then tries to roast Ruby & Yang but the Frightful Four completely turns to ice and shatters.

Yang: "What was that?"

(Y/N): "Apparently, they are the fantastic four from earth 9412 and in their world, they had a convergence. Unlike our world however, they had two earths that replaced the Rick and Morty earth and the CapCom universe. A world of supernatural beings and a world where beings of extermination, upgraded men and various others are try to have their way with the universe. The earth got infected with a virus made by A.I.M. created from Dalek DNA, the Croatoan virus, Dr Spectrum's Power Prism and a drop of blood from a being called Zombie AKA Simon William Garth."

Rick: "You couldn't think of telling us that earlier?!"

(Y/N): "I didn't thought it was a deal until now."

Tony: "Well, let's help them out."

XXXXX

To be continued...