Perhaps Percy discovers that his father, Poseidon, has a connection to a type of magic that he never knew about. This leads him to a journey of learning this new form of magic. He could face challenges like magical illusions created by enemies who don't want him to gain this new power. Along the way, he befriends a magical creature that helps him understand the nuances of the magic he is learning, such as how to channel his energy in a more efficient way to cast stronger spells.
Well, maybe Percy stumbles upon a hidden magical realm where he meets an old wizard who decides to teach him magic. He could learn spells to control water in new and extraordinary ways, like turning it into different shapes or using it to communicate over long distances.
In the fanfiction, Percy might be forced to learn magic to save his friends. He could start with basic magic like levitation and then progress to more complex spells. For example, he could learn to combine his demigod powers with magic to create unique defenses against monsters. He might learn from a magical book that has been long forgotten and holds the secrets of a powerful ancient magic.
Maybe an ancient god or goddess who has been forgotten by most but still holds great power in magic. This deity could see potential in Percy and choose to teach him magic as a way to bring back some balance in the world. It could be a goddess of magic who was once a part of the pantheon but has since been overshadowed.
Percy is the main character. There could be a powerful and mysterious mage who serves as a sort of antagonist at first. This mage tests Percy's skills and knowledge of magic. But as the story progresses, they might end up having a more complex relationship, like a reluctant alliance when they face a common, greater threat.
Well, perhaps Percy discovers a hidden magic within himself that he didn't know he had. Maybe he starts off struggling with basic spells and then gradually masters more complex ones. For example, he could be trying to make objects levitate at first and later on be able to conjure powerful shields.
Well, it could be that Harry has an encounter with an Egyptian wizard who decides to teach him their unique brand of magic. This magic might involve things like controlling the sands or communicating with mummies. Through his learning, he gains new powers and uses them to face his enemies in a different way than before.
Well, the plot might start with Percy being sent on a special mission by the gods. They need someone with his quick reflexes and sharp eyesight to be a sniper. Along the way, he has to deal with the moral implications of taking lives from a distance. He might also face challenges in terms of getting the right equipment and training. His friends could be initially skeptical of this new role for him, but as they see him succeed in various battles, they come to accept and rely on his sniper skills.
One possible plot could be Percy using his bike to travel across the country to find and protect other demigods. He could encounter various monsters along the way and use his biker skills, like sharp turns and high - speed maneuvers, to evade them.
One possible plot could be that a powerful enemy, let's say a dark sorcerer, has found a way to use the powers of the Greek gods against the supernatural beings in the Mikaelson universe. Percy Jackson is sent to investigate and ends up getting caught in the middle of the Mikaelson family drama. He has to use his skills as a demigod and his knowledge of Greek mythology to help the Mikaelsons defeat this new threat while also trying to keep his own identity and mission a secret from some of the more untrustworthy members of the family.
Maybe Percy Jackson somehow gets transported to the world of Stranger Things and has to fight the Demogorgon. He could use his water - controlling powers to try and defeat it, like dousing it with a powerful stream of water.
Well, in a 'Percy Jackson Endgame' fanfiction, the plot might involve Percy finally having to make a huge sacrifice to save not just the demigod world, but the entire mortal world as well. The other characters like Annabeth, Grover, and the rest of the gang would be trying to find an alternative solution while Percy is ready to give it all up. It could also include a race against time as some sort of dark prophecy looms over them.
The plot might involve Percy getting lost in Alagaesia. He then has to figure out how to get back home while also getting involved in the local politics and power struggles. Since he's a demigod, he might be seen as a powerful ally or a threat. He could end up using his knowledge of Greek mythology and his own powers to outwit the various factions in Alagaesia.