One idea could be a story where Percy has to deal with a new mythical creature that shows up at school. Maybe it's a mischievous imp that keeps causing chaos during classes and Percy has to figure out how to send it back to where it came from without getting in trouble with the teachers.
A fanfiction could be set in a boarding school for demigods. Percy is sent there and has to adjust to a whole new set of rules and a different group of demigods. There could be competitions between different cabins or groups within the school, and Percy has to prove himself once again, not just as a hero, but also as a good student and teammate.
Another interesting concept could be a fanfiction where Percy and his friends start a secret club at school to study and practice ancient Greek magic. They could face challenges like trying to keep it hidden from the other students and the school authorities who might not understand what they're doing. It could also involve rivalries with other students who suspect something strange is going on.
A plot could involve a curse that has befallen the school. The classrooms are in chaos, the teachers are acting strange, and it's up to Percy and his gang to figure out which god or monster is behind it. They'd have to search through the school's hidden passages and use their knowledge of Greek mythology to solve the mystery.
One idea could be Percy having to deal with a new bully at middle school who turns out to be a minor monster in disguise. He has to figure out how to expose the bully without revealing his own identity as a demigod to the regular students.
One idea could be a school competition where Percy and Nico have to team up against other demigods. They could use their unique powers in unexpected ways to win, like Percy using his water control to create cool water sculptures as part of an art contest, and Nico summoning shadowy creatures for a drama performance.
One idea could be a fanfiction where Percy and his friends go on a new quest in a modern, urban setting. Instead of the usual mythological locations, they have to deal with monsters hiding in big cities. Another idea is a story that focuses on the relationships between the characters in a more in - depth way, like exploring the friendship between Percy and Grover during their off - quest times. And a third idea could be a time - travel fanfiction, where Percy gets sent back to the time of the ancient Greek heroes and has to interact with them while still holding onto his modern values.
One idea could be to explore Percy's life after he has fully mastered his powers. Maybe he goes on a quest to find a long - lost relative who also has demigod powers. Another could be a story where Percy and his friends have to deal with a new type of monster that is immune to their usual weapons and they have to find a creative way to defeat it.
A great plot for a 'Percy Jackson at School' fanfic would be Percy competing in a school - wide competition that is secretly a test by the gods. The tasks in the competition could be related to the skills he has learned in his demigod adventures, like sword - fighting or outsmarting a maze - like obstacle. Also, he could befriend a mortal student who starts to suspect there is something different about Percy and his friends, and Percy has to decide whether to reveal the truth or keep the mortal in the dark.
Another interesting idea is a high school competition between different cabins. Instead of regular sports, they could have contests like who can best use their godly powers in a non - destructive way. It would be a great way to show off the different abilities of the demigods and also create some friendly rivalries.
Perhaps there's a prophecy that involves both Percy and Artemis in the high school. It could be about a hidden power within the school that only they can unlock together. They have to navigate high school politics, friendships, and enemies all while trying to figure out the prophecy and save the day.
One idea could be Percy having to deal with a new type of mythical creature that has infiltrated Goode High School. Maybe a group of mischievous satyrs that are causing chaos in the school cafeteria by stealing all the food and Percy has to use his skills to stop them without revealing his true identity to the normal students.
One idea could be Percy having to hide his demigod powers at high school while dealing with a bully who unknowingly has ties to a minor Greek god. This would create a lot of tense drama situations.