The Water Princess could find a time - traveling device and end up in a different era of the Adventure Time universe. She then has to figure out how to get back while also dealing with the strange things and characters she encounters in that time period. This could lead to some really interesting interactions, like meeting a younger version of Princess Bubblegum or seeing how the Magic Man was in the past.
One idea could be that the Water Princess discovers a hidden underwater kingdom that has a connection to the Land of Ooo. She has to team up with Finn and Jake to protect it from an evil sea creature.
Well, they could start by having a bit of a misunderstanding. Finn might accidentally break a water - related tradition in the Water Princess's kingdom. This causes some tension between them at first. But then, they discover a common enemy that is threatening both the Land of Ooo and the Water Kingdom. So they have to put aside their differences and team up. They could go on a journey through different elemental regions, like a fire region where they have to use the Water Princess's powers cleverly to survive.
One idea could be that the Water Princess discovers a hidden underwater kingdom that was once part of her domain but has been lost. Another could be her facing a drought in the Land of Ooo and having to use her powers in new and creative ways to bring water back. Maybe she has to team up with Finn and Jake to fight an enemy that is polluting the water sources.
One idea could be that the Ice Princess decides to explore the human world for the first time. She might encounter strange things like cars and skyscrapers and have to figure out how to adapt. Another could be a story where she teams up with Finn and Jake to save the Ice Kingdom from a new, mysterious threat that is melting all the ice. Maybe she also discovers a long - lost power within herself during this adventure.
One interesting plot idea could be the Ice Princess trying to make friends with the other princesses in Ooo. Maybe she's tired of being seen as just the cold and distant one. Another could be her going on a journey to find a way to control her ice powers better, like seeking a magical item or a wise old wizard. And she could also team up with Finn and Jake to save Ooo from a new threat that only her ice powers can defeat.
Finn and Jake are obvious allies. They are always up for an adventure and helping those in need. Their bravery and unique skills would be very useful.
One common theme is her relationship with other characters. For example, how she interacts with the heroes like Finn. Another theme could be about her power over water and how it is used in different situations.
One idea could be Shoko discovers a new, hidden realm in the Land of Ooo. She teams up with Finn and Jake to explore it and uncovers ancient secrets that could change the whole world of Adventure Time.
Well, a plot could revolve around the return of some old foes in a new form in the future. For instance, the Lich could come back as a more insidious threat that infects the minds of the future inhabitants of Ooo. Also, we could explore the idea of Finn's sword having new powers or a different significance in the future. Maybe it's the key to unlocking a long - forgotten dimension that holds the secrets to saving Ooo from a new impending doom.
One idea could be a new student arriving at Adventure Time Academy who has a mysterious power that no one has seen before. This new character could disrupt the existing social dynamics among Finn, Jake, and their friends.
Maybe Marceline the Vampire Queen teams up with a Dark - type Pokémon in a fanfiction. Since she has a somewhat dark and mysterious personality, it would be interesting to see how she interacts with a Pokémon that shares those traits. For example, she could form a bond with a Umbreon and they could go on adventures together.