One plot idea could be about a character finding a mysterious key near the ocean and it leading them to the door. They then discover a hidden underwater world full of strange creatures and ancient secrets.
Perhaps the fanfiction could focus on a group of friends who are on a beach adventure and accidentally stumble upon the door in the ocean. As they enter, they face challenges like deciphering the language of the underwater inhabitants to find their way back home.
Another plot could involve Percy having to deal with a powerful sea monster that is not from Greek mythology but from some other ancient culture's sea lore. He has to use his skills and the help of his friends in a new and different way to defeat it.
One plot idea could be that the boy next door is a secret musical prodigy and joins the Glee club, causing a stir among the members. Another could be a love triangle between the main character, their long - time friend, and the boy next door who is new to the Glee world. Maybe the boy next door has a mysterious past that is somehow related to the music in Glee, like his family has a hidden connection to a famous singer or songwriter in the Glee universe.
One idea could be exploring the mystery behind the ajar door. Maybe there's a hidden world or a secret message waiting to be discovered. For example, the door could lead to a time - traveling portal or a dimension filled with magical creatures.
One idea could be that the girl next door is a secret music prodigy herself. She could start collaborating with Austin and Ally secretly, which causes some jealousy from their friends. This could lead to a series of comical misunderstandings and ultimately, a big musical performance where they all come together.
One idea could be to create an OC who is a master of disguise and has a personal vendetta against one of the casinos they plan to rob. This OC could use their skills to infiltrate the casino in multiple ways, adding new twists to the heist.
In the fanfic, the ocean soul could give Percy the ability to communicate with long - lost sea creatures that hold ancient secrets. These secrets could be related to the origin of the gods or a powerful weapon. Percy has to earn the trust of these creatures and use the knowledge they share to prevent a great catastrophe that looms over both the mortal and immortal worlds.
Perhaps Ocean is a messenger from the sea gods. Beidou, being a fearless seafarers, is intrigued by Ocean's appearance and message. Ningguang, as the Tianquan of Liyue, is more cautious. They start off at odds, with Beidou wanting to follow Ocean's lead immediately and Ningguang wanting to study the situation more. But as strange events start to occur in Liyue, they realize they need to work together with Ocean to solve the mystery and protect Liyue from potential threats from the ocean.
One interesting plot idea is a crossover battle. Picture Naruto using his Rasengan against the villains in the Kid Next Door world. It would be a clash of different power systems.
One idea could be exploring the unspoken stories of the ranch hands. Maybe there's a hidden love affair between two of them that has to be kept secret due to the social norms of 1923. Another could be focusing on how a young character dreams of leaving the ranch and going to the big city, but faces many obstacles. And a third idea could be a mystery plot where strange things start happening on the ranch and the characters have to figure out what's going on.
One idea could be that Moana discovers a hidden part of the ocean that has a special connection to her ancestors. The ocean could lead her there, and she might find ancient artifacts or powers that help her protect the island in a new way.