What could be an interesting plot in a Percy Jackson x Aquaman fanfiction?

Perhaps Percy is on a quest related to Poseidon and accidentally crosses paths with Aquaman. They initially have a misunderstanding, thinking the other is a threat. But then they realize they both have a common goal - to protect the seas. So they team up to stop a group of evil sea witches who are polluting the ocean and causing chaos among the sea life. Aquaman uses his trident and connection to the ocean's life, while Percy uses his sword and his wits to outsmart the witches.

One possible reason could be that Percy Jackson has some sort of power or achievement that makes Aquaman show respect. Maybe Percy has saved the underwater world in some way, or he has a connection to a powerful underwater deity that Aquaman respects.

Another plot could involve a prophecy that foretells the coming of a 'Chosen One' who has the power of both the demigods and the Jedi. Percy and Ahsoka are both thought to be possible candidates. They are brought together by the gods and the Jedi Council to figure out which one of them it is. During this time, they face challenges that test not only their physical abilities but also their moral compasses as they come from very different backgrounds but share the same overarching mission.

Maybe in the fanfiction, Rory is on a mission in Percy's world. Percy, being the son of Poseidon, has a connection to the water which could be useful in a situation where Rory needs to cross a large body of water quickly. They start off as strangers but as they journey together, they discover that their destinies are somehow intertwined. Percy helps Rory understand the nuances of his world, and in return, Rory shows Percy some of her advanced combat techniques.

One possible plot could be that Percy Jackson's world is suddenly invaded by a powerful threat that the demigods alone can't handle. So, Percy and his friends seek the help of the Justice League. The League initially doubts the existence of Greek gods and demigods but soon realizes the seriousness of the situation. They team up, with Percy teaching the heroes about the magic and monsters of his world while they teach him about modern combat and technology. Together, they fight the new threat that combines both magic and advanced weaponry.

One possible plot could be that Harry Potter discovers a magical portal that leads him to the underwater world of Aquaman. There, he has to learn the ways of the underwater society while also using his magic to help Aquaman fight against an evil force that threatens both the wizarding world and the underwater realm. Maybe a dark wizard has teamed up with a sea - based villain, and Harry's unique skills are needed to defeat them.

A common trope is the 'fish out of water' situation. The female Percy Jackson, used to the world of Greek mythology, is suddenly in Aquaman's underwater domain. It creates a lot of humorous and interesting situations as she tries to adapt. Another trope is the power struggle. Since both have power over water, there could be a bit of a tussle about who's in charge when it comes to water - related problems.

One possible plot could be that the gods in the Percy Jackson universe sense a great threat from another dimension (the Marvel universe). Percy and his friends are sent to team up with the Avengers. Percy's water powers could be useful in fighting villains like Electro. Annabeth's strategic mind would assist in planning battles against foes like Loki. They all have to learn to work together, with Percy and the Avengers initially having some clashes due to their different ways of handling things.

One possible plot could be that Percy gets lost in a strange dimension and ends up in the Naruto world where he meets Tsunade. Tsunade initially doubts Percy but then realizes his powers when he shows his ability to control water. They then team up to fight a common enemy that is threatening both their worlds.

It could start with Percy being on a quest near the ocean. Suddenly, he senses something strange in the water, and that's when Aquaman appears. They exchange words, and Percy is curious about this new figure in the sea. Then they could have a short fight because of a misunderstanding. After that, they realize they are on the same side and start to plan how to deal with the real threats in the ocean.