A great plot idea is Percy getting into trouble when his ADHD and dyslexia act up in a really bad way during an important exam at Goode. His demigod traits make it seem like he's just being a bad student, but in reality, he's sensing some kind of supernatural danger nearby. And then he has to convince his teachers and classmates that there's something more going on without actually spilling the beans about his true nature. Another could be a love triangle situation at Goode, where a mortal girl likes Percy, but he's still in love with Annabeth, and it causes all sorts of drama both in the mortal and demigod realms.
Well, a cool plot might involve Percy's old enemies from the demigod world somehow influencing events at Goode. For example, a spell is cast that makes the students act like the minions of an ancient Greek villain. Percy then has to figure out how to break the spell without revealing his powers too much. Also, it could be interesting if there was a plot where Percy discovers a hidden part of Goode that has a connection to the gods, like a secret chamber that was built long ago by a demigod who attended the school.
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.
A really interesting plot would be if Percy's friends from Camp Half - Blood transfer to Goode High for some reason. They all have to adapt to the mortal school life while also dealing with the threats that follow Percy, like a vengeful demigod from an enemy camp who wants to expose Percy in the middle of his mortal school life.
The fanfiction could start with Percy reluctantly taking on a teaching job at Goode. He tries to keep his demigod identity a secret at first. But then strange things start happening at the school, like students having prophetic dreams or unexplained disappearances. Percy realizes he has to use his knowledge and powers to solve these mysteries and also teach his students about the hidden world of gods and monsters. He might even bring in some of his friends from Camp Half - Blood to help out.
Well, in the Percy Jackson books, there's no mention of Percy Jackson Goode reading Percy fanfiction. Fanfiction is more of an outside - the - official - story thing created by fans. It's not really part of the main plot or something the characters would typically be involved in. So, it's very likely that he doesn't read it.
One plot idea could be Percy having to team up with Hera to rescue a group of demigods who have been captured by an ancient monster. Hera, despite her usual aloofness, realizes she needs Percy's unique skills.
If Percy Jackson Goode read Percy fanfiction, he might first be a bit shocked at how fans have taken his story and spun it in different directions. He could find some versions where he's portrayed in a completely different light than he sees himself. However, he might also gain some new perspectives on his own adventures and relationships, seeing how fans view them from the outside. It could also make him more aware of his popularity among fans and the impact his story has had on them.
A plot could be that Sally Jackson plants a lemon tree in her garden that turns out to be a gift from a minor goddess. The lemons from this tree have the power to give those who eat them the ability to see through illusions for a short time. Percy uses these lemons to his advantage when he is on a mission to retrieve a powerful artifact that is guarded by a monster that uses illusions to protect it.
Perhaps a fanfiction where Percy and Thalia are transported to an alternate dimension. In this new world, they have to figure out how to get back while also dealing with different versions of their friends and enemies. Thalia might have to face an alternate version of herself who has turned evil, and Percy could be the one to help her see the light again. It would be full of action, drama, and self - discovery.
A plot could involve Hera taking Percy on a journey through the past to show him the origins of the gods' power and how it relates to the current problems in the demigod world. This would give Percy a new perspective and knowledge that he can use to save the day. Or perhaps Percy accidentally stumbles upon a secret of Hera's that she's been hiding for centuries, and she has to enlist his help to keep it safe, all while other gods are trying to uncover it too.
Another plot idea could be that Percy discovers a hidden underwater civilization that is not related to Poseidon. This civilization has its own set of rules and powers. Percy has to navigate through their complex society and politics while also trying to convince them to help the demigods in a coming war against an ancient evil that is rising again. The underwater civilization could have unique magic and technology that the demigods have never seen before.