Well, in a 'Percy Jackson Son of Pontus' fanfiction, a possible plot is that Percy gets visions from Pontus himself. These visions lead him to a hidden underwater realm that no one knew existed. There, he finds a group of sea - creatures that have been waiting for the son of Pontus to come and free them from an ancient curse. To break the curse, he has to complete a series of challenges that test not only his physical strength but also his understanding of his new identity as the son of Pontus.
One idea could be Percy discovering new powers related to being the son of Pontus. For example, he might be able to control underwater currents in ways he couldn't before. Another plot could involve him having to face a new type of sea monster that is specifically drawn to his Pontus heritage. He could also go on a quest to find an ancient artifact related to Pontus that has the power to either save or destroy the underwater world.
A great plot for this fanfiction could be Percy forming an alliance with other demigods who also have a connection to the sea, but perhaps a different aspect of it compared to his. They could team up to fight against a common enemy that is threatening the balance of the sea. Or, Percy could be faced with a choice that would either make him fully embrace his Pontus side or reject it, which would have major consequences for his relationships with other characters like his friends at Camp Half - Blood.
A plot could involve Percy discovering a hidden power within him that is related to Pontus. Maybe he has the ability to control a special type of sea creature that was thought to be extinct. As he tries to master this power, he could face opposition from those who fear his new - found strength. He might also meet other demigods who are either helpful or hindering his journey of self - discovery.
The plot could involve Percy's journey to discover the true meaning of being the son of Gaea and Pontus. He could be on a quest to find out more about his parents' realms and how they interact with the world of the demigods. Along the way, he may encounter mythical creatures that are related to Gaea and Pontus, and he has to either fight them or make peace with them. There could also be a sub - plot about Percy's relationships with his friends at Camp Half - Blood, as they struggle to accept this new side of him.
Well, it could be about Percy having to deal with the powers and heritage that come with being the adopted son of Pontus. Maybe he discovers new underwater abilities that are different from his Poseidon - given powers. He might also have to face enemies who are after the secrets Pontus has.
One idea could be Percy having to use his charm powers (from being Aphrodite's son) to charm a powerful, ancient monster into sparing a group of demigods. He might struggle with the morality of using such powers in this way.
A plot could involve Percy being sent on a mission to an ancient Egyptian underworld realm by Sobek. There, he meets various Egyptian deities and creatures. He has to use his skills as a demigod and his new powers from Sobek to navigate through the dangerous realm and return to the mortal world with important information for the safety of Camp Half - Blood.
Another plot could be Percy discovering a long - lost relative among the children of Hades. This relative has some sort of power or knowledge that could change Percy's understanding of his own identity and his place in the demigod world. It could lead to a journey of self - discovery for Percy as he navigates this new family connection within the dark and often misunderstood realm of Hades.
Another plot could involve Percy having to prove himself to the children of Athena. Since he's not a child of Athena, they might be skeptical of his abilities at first. But as they face challenges together, like deciphering ancient prophecies that are hidden in Athena - related temples, Percy shows his worth through his quick thinking and battle skills. This could lead to a great friendship and mutual respect among them.
One idea could be Percy exploring his new powers that come from being the son of a Titaness. He might discover abilities that are different from his normal demigod powers and have to learn to control them quickly. For example, he could have the power to manipulate time on a small scale, like slowing it down in a battle to gain an advantage.
One idea could be Percy having to team up with Leto's other children in a quest to retrieve a powerful artifact that was stolen from their mother. Another could be Percy discovering a hidden connection between his powers and Leto's domain, leading to a new level of his abilities.
Well, perhaps in the fanfiction, Percy discovers some hidden powers that come from being the son of Atlas. He could struggle to control these powers at first, which causes some chaos in Camp Half - Blood. And then, there could be a prophecy that only he, as the son of Atlas, can fulfill. It might involve traveling to a place that was once under Atlas's domain and facing creatures that have been long forgotten but are now resurfacing due to some dark magic.