Episode Title:
Temple of Mars.
Episode Description:
Finn is visited by Jermaine, who says that Jake is in space and they must rescue him. They head to Mars, where Normal Man (now King Man) has Betty working to "cure" her. King Man has them enter a cave to search for a device to save Jake, and they encounter a variety of puzzles. They meet Past Betty, who was supposed to go on a trip in a week but met Simon (changing her plans). Finn and Jermaine tell her that she needs to think about herself, and Betty "changes" her past so she left that day instead of a week later. The cave is actually the device, and they are reunited with Jake. Betty tells King Man that seeing Finn retrieve Jake has increased her interest in rescuing Simon; she has a plan to save Simon and retrieve Margles from GOLB, which frightens King Man.
