Some interesting Frozen 2 fanfiction plot ideas could revolve around the idea of a magical item. For example, there could be a magical crystal hidden deep in the forest that has the power to either save or destroy both the forest and Arendelle. Elsa and her friends embark on a quest to find this crystal before it falls into the wrong hands. Another idea is that a dark force from outside the known world tries to invade the forest and Arendelle, and the characters have to unite not only the people of Arendelle and the forest but also other magical beings to fight against it. Also, a plot could be centered around a prophecy that was never fully revealed in the movie, and Elsa and Anna must figure out what it means for their future.
A great plot for Frozen fanfiction could be a time - travel story. For example, Elsa is sent back in time to when her parents were young. She has to figure out how to get back to her own time while also trying not to change the past too much. But she might also learn some secrets about her family's past and her own powers. Another could be a story about a competition in Arendelle. Anna decides to hold a magical - themed competition, and people from all over come to show off their skills. Elsa has to judge, and in the process, she meets someone who seems to have powers similar to hers but uses them for evil. Anna, Elsa and Kristoff then have to stop this person.
Well, perhaps in the fanfiction, the magic of the Frozen world somehow gets intertwined with the magic of the jungle in Tarzan's world. For example, Elsa's ice magic could start to affect the climate of the jungle in unexpected ways. Tarzan, being so in tune with the jungle, tries to figure out what's going on. And Anna could get lost in the jungle and Tarzan helps her find her way back while also learning about her world of Arendelle.
One plot idea could be that Anna and Kristoff get lost in a magical forest on their way back from a diplomatic mission. They have to rely on each other and their skills to find their way out while also facing strange creatures. Another could be a story where they have an argument over how to handle Elsa's new ice - related discovery, and it tests their relationship. Maybe a third idea is that Kristoff discovers a long - lost relative who doesn't approve of his relationship with Anna, and they have to work through that together.
A cool plot could involve the characters from Frozen getting stuck in the RWBY world and having to learn how to fight Grimm. Anna might be really eager to learn combat skills, while Elsa is more focused on controlling her powers in this new and dangerous environment.
One idea could be that Elsa's powers are mistaken for some sort of new super - weapon by the villains in the Avengers universe. So, the Avengers have to figure out if she's a threat or an ally. Another could be that the Avengers get trapped in Arendelle during a mission and have to work with the Frozen characters to get back home. Maybe Thor could teach Kristoff some combat skills while Elsa helps Iron Man with his suit's temperature control system.
One idea could be that Elsa discovers she has vampire powers after being bitten in a hidden part of the frozen forest. Another could be a love story where a vampire falls for Elsa and tries to convince her to embrace the dark side while she struggles with her own ice powers and the implications of becoming a vampire. Or perhaps Elsa is turned into a vampire and has to learn to control her new thirst while still ruling Arendelle.
One idea could be that a powerful dark sorcerer kidnaps Elsa because he wants to use her ice powers for his own evil deeds. He locks her in a magically sealed dungeon deep in an ancient castle. Another plot could involve a group of thieves who mistake Elsa for a valuable princess they can ransom. They take her to a hidden lair in the mountains. A third option is that a jealous rival from another kingdom, who envies Elsa's powers and her popularity, arranges the kidnapping to discredit her.
A really cool idea could be a Pokémon fanfiction set in a post - apocalyptic world that has been frozen over. A lone trainer travels across the icy landscape, trying to find and rescue rare Pokémon that are on the verge of extinction due to the extreme cold.
One idea could be a fanfiction where Elsa discovers a new, hidden power within her that allows her to communicate with animals. This could lead to all sorts of adventures as she teams up with a talking fox to save the kingdom from an unknown threat.
One idea could be that Percy is frozen in ice due to a powerful curse from an ancient enemy. His friends in Camp Half - Blood have to go on a quest to find a magical item that can break the curse. Maybe it's a rare flower that only blooms in a certain realm.