What are some interesting plot ideas for 'Percy Jackson the Son of Neptune fan fiction'?

One idea could be Percy forming an unexpected alliance with a minor Roman god. In the fanfiction, this god could have a unique power that helps Percy in his quests. For example, a god of illusions who can create decoys to mislead Percy's enemies.

A really interesting plot would be if Percy was transported to a parallel universe where the roles of the Greek and Roman gods were reversed. He would have to adapt quickly to this new world, make new friends, and fight against the enemies who now have different motives and powers. It would be a great opportunity for character development and exploring different mythologies.

Another plot could involve Percy's journey to discover more about his Roman heritage. He could be sent on a quest by Neptune himself to find an ancient artifact that is key to the future of the Roman demigods. Along the way, he has to deal with the politics and rivalries within the Roman camp. Some might see him as a threat to their power, while others see him as their only hope. He also might have visions of his past lives as a Roman hero which could guide him on his quest.

Well, a great plot for Percy son of Neptune fanfiction could involve Percy getting lost in a time - warp within the ocean. He could end up in an era where Neptune was just starting to gain his powers. This would force Percy to interact with a younger version of his father and also deal with the different rules and threats that existed back then. Additionally, Percy could find a way to bring some knowledge from that time to his present to help in a current conflict. Also, Percy might have to team up with some primitive sea creatures who have their own unique abilities and motives.

One plot idea could be Percy discovers some hidden prophecy while reading 'Son of Neptune' that affects his future adventures. Another could be that he reads it and starts to question his own role in the demigod world more deeply.

You could write about the Son of Neptune getting lost in a mysterious realm. In this realm, the rules of his world don't apply. He has to learn new ways to survive and fight. Along the way, he meets a group of misfits who he has to team up with. Together, they try to find a way back home while also uncovering secrets about this strange place that could have implications for his own world.

One potential new character could be a selkie. Selkies are mythological creatures that can transform between seal and human form. This selkie could be an ally or a foe to Percy. Maybe there's a sea nymph who has a special connection to Percy's mother. She could show up to help Percy when he's in a tight spot. And what about a sea giant who was once an enemy of Neptune but now wants to make amends? He could be a very interesting addition to the story.

One idea could be that Percy and Grover discover a hidden part of the Camp Half - Blood forest that has magical creatures not known before. They have to figure out how to protect these creatures from a new threat.

Perhaps the Staff of Fire gets stolen and Percy has to go on a quest to find it. Along the way, he teams up with some new demigods he's never met before. They face various challenges like a maze full of fire - breathing monsters. Percy discovers that the Staff has a hidden power that can only be unlocked by a certain combination of his own powers and those of his new friends.

One idea could be Percy Jackson teaming up with Kratos from God of War. They could face a common enemy that threatens both the Greek and Norse worlds. Maybe a powerful Titan who has found a way to break free from Tartarus and is causing chaos everywhere.