It's a dark day in Ooo, but fear not, Candy Kingdom-- Peppermint Butler and Cinnamon Bun will... protect... you? Desperate times call for desperate measures and Princess Bubblegum has no choice but to turn to the gummiest of gumshoes. Peppermint Butler is on the case, and with Cinnamon Bun's complete lack of keen deductive skills, they just might have a chance at navigating Ooo's shady underbelly and locating everyone's favorite heroes...