Fionna the Human/Marshall Lee FanFiction

Switching Places

Switching Places

F/F
F/M
G
Updated
13.04.2025
Fandom
Adventure Time
Characters
Finn the Human, Princess Bubblegum/Marceline, Princess Bubblegum, Marceline (Adventure Time), Ice King | Simon Petrikov, Jake the Dog, Fionna the Human/Marshall Lee, Finn the Human/Flame Princess, Fionna the Human, Cake the Cat, Prince Gumball, Marshall Lee,
Tags
Switching Land Of OOO Land of Aaa
What happens when Finn and Fionna get switched between OOO and AAA thanks to the Ice Queen and King. How will they get back and how will they be able to adjust to this strange "new" world?