This might take a minute to type hold up,

So basically they’re aged up in this au, like young adult age I guess. Butters still hasn’t let go of his past and returns back to being a villain and bringing chaos to the world and since he’s not in fourth grade anymore he’s able to do much worse stuff which spreads across the town and the world quickly. Everybody from his class back then hears about this and understand they must put a stop to him and try to change his mind so they go back to playing a game of playing villains and superhero’s but one hero decides to betray them and joined Chaos’s side. The Coon. With both their power together they were able to control the world and everybody, the rest of the hero’s now led by Mysterion must put an end to this all and etc etc

also may I mention they actually have superpowers in this au as well-