(Man, we all know that Pibby, as in the series, is dead... but like, requested. This also takes place after the Gum War.)

Many years after the Gum War, you, pretty much everyone... IMPORTANT, at least, are friends. You all are having some sort of sleepover in a newly-grown treehouse out of Fern's remains, making pretty much an exact replica of Finn and Jake's, which, they needed a new one since it got destroyed. You all were right now watching some movies, some sitting on the floor some on the couch on the treehouse, like Bubblegum and Marceline... which, very girlfriend-ly close, because they kind of are girlfriends. In case you were wondering, the movie is bad.

Finn got bored of the movie, so he said he'd go get his like... old boombox of his. Though when he does, he hears some soft static-y noise coming from outside, so he looks out the window, only to see some massive black liquid-tsunami swallowing anyone in it's path, living or not, speaking of living, there is some Candy-People's bodies peeking form the sludge, though they look kind of, infected-ish with the same liquid clinging to their bodies. This is obviously... new.

Finn: "Hey, guys? What is that?"

For once he isn't using his 'cool-dude' language, which means something is off, so Bubblegum stands up and walks over to him, looking out to see, well, the black-liquid.

Bubblegum: "I... don't know, Finn. I've never seen anything like it."

Though they don't have a lot of time to speak as well... it's like a tsunami, well, a small one, but y'know, it's coming towards them.

Bubblegum: "Everyone, you might want to hold-"

Well, she's cut off as the liquid collides with the treehouse, the force knocking it down almost immediately. The treehouse is riding along on top of the wave, which gives some time to escape, though the liquid is pulling it in rapidly... so like, epic movie escape later out a window, and you all are outside, watching the treehouse ride away. Do whatever.