Another possible plotline is that Percy is exiled to a completely different realm, like a frozen wasteland or a realm filled with dark magic. There, he has to adapt to the new environment, learn new powers or skills in order to survive. Along the way, he might also discover secrets about his own past or the history of the gods that were previously unknown.
One interesting plotline could be Percy trying to find a way to return home while facing new and unexpected challenges in his exile. He might encounter strange creatures or make new allies.
One idea could be to explore Percy's life in exile and how he copes with being away from his friends and the world he knew. Maybe he discovers new powers or forms unexpected alliances. Another could be that he's exiled to a realm filled with ancient and forgotten creatures, and he has to find a way to survive and potentially return home.
One idea could be Percy being exiled to a forgotten part of the mythological world, like a lost island where ancient and dangerous creatures lurk. He has to learn their ways to survive and find a way back to his friends.
One interesting plotline could be the Seven facing a new, more powerful enemy that is a combination of different mythological creatures. This would test their teamwork and individual powers in new ways.
One interesting plotline could be Aphrodite taking a special interest in Percy for a quest related to love and beauty. Maybe she tasks him with finding a lost artifact that has the power to enhance or destroy love. Another could be Percy falling under a love spell cast by Aphrodite, which causes chaos among his friends as he starts acting out of character. And a third one might be Aphrodite using Percy as a pawn in a love - related game among the gods, where his actions and decisions have far - reaching consequences for the relationships between the deities.
One interesting plotline could be the siblings going on a secret quest together without the knowledge of Chiron or the other campers. They might face a new and unknown monster that tests their combined skills.
In some fanfictions, a centurion discovers a long - lost prophecy that involves Percy. This could lead to a race against time as they try to figure out the meaning of the prophecy and prevent a great disaster. Maybe it involves a new Titan rising and they need Percy's unique connection to the sea gods to stop it.
Maybe in the fanfiction, Percy's player side shows up when he has to navigate the complex social hierarchies of the demigod world. He could be seen charming different groups of demigods, from the children of Athena with his quick - witted remarks to the children of Aphrodite with his newfound 'player' charisma. This could lead to all sorts of adventures and conflicts as he tries to maintain his relationships while also keeping up his player image.
Another plotline could be Percy trying to find a way to clear his name and escape the prison. Along the way, he might make some unexpected allies among the inmates or even some prison staff who are sympathetic to his cause. This could lead to an epic adventure within the prison walls as he tries to gather evidence and outwit his captors.
One interesting plotline could be a yandere character becoming overly possessive of Percy. For example, they might try to isolate him from his friends at Camp Half - Blood, seeing them as threats to their 'relationship' with Percy. Another could be a yandere secretly sabotaging Percy's quests out of the fear of losing him. They think that if he doesn't go on these dangerous quests, he'll be safe and stay with them.
One interesting plotline could be Percy having to face a new and powerful ancient evil that the gods are also afraid of. This would put him in a position where he has to use his wits and powers in ways he hasn't before.