A plotline could involve Sally being disowned because of some false accusations related to the demi - god world. Percy feels guilty as he thinks it's because of his existence as a demi - god that his mother is facing this. He teams up with his friends from Camp Half - Blood to find evidence to prove Sally's innocence. Meanwhile, Sally has to fend for herself in a world that has suddenly turned against her. She might have to rely on some old friends or even make new allies among mortals or minor gods.
One possible plotline could be that Sally is disowned by her family for being involved with the world of the gods. Percy then has to go on a journey to find a way to restore her family's acceptance. He might face various mythological creatures and challenges along the way. Another idea could be that Sally's disownment is part of a plot by an enemy to get to Percy. So Percy has to protect his mother and also figure out who is behind this scheme. It could also be that Sally discovers a dark secret about her family that leads to her being disowned, and Percy helps her uncover the truth and clear her name.
Well, perhaps in the fanfic, Sally is disowned due to her association with Poseidon. The gods might be pressuring her family to cut ties with her. Percy, enraged by this, decides to take matters into his own hands. He could start by trying to negotiate with the gods involved. If that doesn't work, he may look for a way to break the influence the gods have over her family. Along the way, he'll have to deal with his own internal struggles about his identity as a demi - god and his relationship with his mother. And Sally, on her part, is trying to build a new life while still holding on to hope that she can be reunited with her family.
Percy would be extremely angry. He loves his mother deeply, and her disownment would feel like a huge injustice. He'd probably want to immediately go and confront the people who disowned her. Maybe he'd also feel guilty, thinking it's his fault as a demi - god that his mother is in this situation.
One possible plotline could be Percy Jackson finding himself in the 1700s and having to deal with the different forms of mythological creatures that were more prevalent during that time. Maybe he has to stop an ancient evil that was sealed away centuries ago but is now being awakened in the 1700s due to some dark magic rituals.
Another plot could involve Percy Jackson being sent to Jack Darby's world. Percy would have to deal with the new technology and different threats there. Maybe he discovers that some of the ancient monsters from his world have a connection to the technology in Jack's world. Jack and Percy would then have to team up to stop these threats from spreading chaos in both their worlds.
In this fanfic, it could be that the power of Olympus has become corrupt. Percy, being a hero with a strong sense of justice, decides that the only way to set things right is to destroy it and start anew. He could first target the symbols of the gods' power, like Zeus' lightning bolt. With the help of his friends from Camp Half - Blood, he might stage a full - scale assault on Olympus, using their combined skills and powers to take on the gods and their defenses.
In a fanfic, Percy could turn into a dragon as a result of a strange experiment gone wrong. His friends at Camp Half - Blood are initially scared but then realize they need to help him. Percy, in his dragon form, has to deal with his new instincts while also trying to communicate with his friends. They might need to find a way to communicate telepathically. As he gets more used to his form, he could use it to explore parts of the mythical world that were previously inaccessible to him.
One possible scenario could be Percy being disowned because of his powers being seen as too dangerous. Maybe the other demigods or even his own family in the fanfic fear what he can do and decide to cut ties.
Perhaps Sally betrays Percy by siding with the gods in a conflict where Percy believes the gods are in the wrong. She might think that by supporting the gods, she can ensure Percy's long - term safety, but Percy feels deeply hurt as he sees it as a betrayal of his ideals.
The fanfic might involve Sally Lemon being a long - lost relative of Percy. She could come to him with some strange knowledge about his family heritage that no one else knew. This knowledge could lead them on a journey to uncover secrets about the Jackson family's past and their connection to the gods, all while dealing with the usual challenges that Percy faces in his world.
Perhaps Percy is lost and ends up in the Japanese mythological world. Amaterasu, seeing his unique powers from a different pantheon, decides to help him find his way back. Along the way, they exchange knowledge about their respective mythologies. Percy teaches her about the Greek gods and their quirks, while Amaterasu imparts wisdom about the Japanese spiritual world. This could lead to a mutual respect and a new friendship that bridges the two mythologies.
It could be a jealous demigod. Maybe someone who has always been envious of Percy's popularity and power. This demigod could spread lies about Percy that lead to his disownment, making them the main antagonist.