BMO wakes up and wants to tell Finn and Jake about a dream it had about it chewing gum, but they've left to explore secret military factory that they think is a dungeon.
Misreading a sign warning against putting hands in machinery as a dungeon puzzle, Jake sticks his hands in some gears while Finn turns on the power to the room. Jake's arm is painfully stretched until Finn turns off the power. As they continue through the factory they discuss how easier life would be without bodies, as they wouldn't have to deal with pain or maintaining bodily health and such. They reach a missile production room and mistake another warning sign against standing too close to the missiles as a puzzle. Jake get smacked aside by a missile being moved and they continue.
As they continue their conversation about how not having bodies would be awesome, they come across a electricity testing room and decide to skip it. Still mistaking the factory for dungeon, they now think it's a dungeon for babies since you can skip "puzzle." They then come across a science chamber of some kind. Noticing a sign warning against going in the chamber that shows a person turning into a ghost, they decide to go in it to try and lose their bodies.
They come out as ghost, but they accidentally frighten BMO, who was able to trace their location.
