Across the land of OOO there are four princesses vying for control:

Princess Bubblegum:
The happy princess brainwashing the world into eternal happiness. Already brainwashed Fern, Lemongrab, Peppermint Butler, and Marceline into her loyal Candy Citizens, she wishes to turn the world into a forced happiness paradise.

Slime Princess:
The Hedonistic party girl consuming the resources of her own kingdom with no end or care. Turning BMO, lSP, and jake into her party goer's she wishes to turn the world into an eternal party as she consumes the world

Flame Princess:
The Flame warrior who keeps things simple, conquer the world though war ad bloodshed. Cinnabun and Finn as her violent flame warriors and her mount Rainicorn turned into a dragon she wishes to have the world under her bloody boot.

Patience St. Pim:
The Selfish Ice Princess who under her own pride has driven her subjects into selfish isolated citizens. She now wishes for the other princess to join her for the sake of her own pride with the help of Gunter and the Ice King

So choose who to follow, learn magic, make your allegiance's clear or stay loyal to only your self.