Kee-Oth the Blood Demon has kidnapped Jake, taken him back to his dimension and thrown him in a pit. If Finn wants to rescue his friend, he's going to need Lady Rainicorn's help... and a videotape that will reveal how to open the portal to Kee-Oth's messed-up dimension.

Root Beer Guy works a boring job during the day and tries to write mystery stories at night. But his life is about to change when he witnesses Finn & Jake kidnapping Princess Bubblegum! There's only one problem: no one believes Root Beer Guy...