One idea could be a story where Percy Jackson discovers an ancient artifact related to the Host of Nekhbet and has to protect it from evil forces. Maybe it gives him some new powers or knowledge about Egyptian mythology.
A fanfic could focus on a team - up between Percy and the Host of Nekhbet. They might face a common enemy that is threatening both the Greek and Egyptian mythological realms. The Host of Nekhbet could bring in their unique abilities like flight or enhanced vision, and Percy could use his skills with water and his sword. They'd have to learn to work together, which could lead to some really cool adventures and character development.
The development could involve the Host of Nekhbet teaching Percy about Egyptian magic. Percy, in turn, could share his knowledge of Greek demigod powers. Their relationship could grow from mutual curiosity to a strong friendship or alliance. As they face challenges together, like a powerful monster that is immune to normal attacks, they'd have to combine their skills. The Host of Nekhbet might use their magic to weaken the monster's defenses while Percy delivers the final blow. This would not only progress the story but also show how their two mythologies can interact in a fanfic.
Well, a cool plot might involve Percy Jackson being framed for helping the Host of Apophis. He then has to clear his name while also trying to prevent the actual rise of Apophis. Or perhaps Percy discovers that there's a connection between the Host of Apophis and a long - lost relative of his, and he has to figure out how to break that connection without harming his family. Also, Percy could be sent on a quest by the gods where the final destination is the lair of the Host of Apophis, but the journey there is filled with all sorts of traps and tests.
A possible plot could be that there is a prophecy that only Percy and the Host of Sobek can fulfill. It involves finding a lost artifact that has the power to either save or destroy the world. Along the way, they face internal conflicts as their different cultures and beliefs clash, but they learn from each other and grow stronger as a team.
One idea could be a fanfic where Sally tells Percy stories about his father from her own perspective before he knew the truth. It would give a deeper look into their relationship and how Sally coped with the knowledge of Poseidon.
One idea could be Percy discovers new powers as the Host of Chaos and has to learn to control them while facing an ancient enemy that was sealed away long ago. He could struggle with the chaotic nature of his new abilities and how they affect his relationships with his friends at Camp Half - Blood.
In a fanfic, perhaps Percy and his friends accidentally stumble upon Medusa's lair while on a quest. But instead of immediately attacking, Medusa offers them a deal. She says she will give them a valuable clue to complete their quest if they help her get revenge on one of the minor gods who wronged her in the past. Percy and his friends then have to decide whether to trust Medusa or not.
One idea could be that Percy encounters a sea monster with tentacles in a new, uncharted part of the ocean. The tentacles could be enchanted and try to trap him, but he uses his water powers to escape. Another plot could involve a tentacle - like creature that is actually a guardian of an ancient underwater temple that Percy needs to enter. Maybe the tentacles are made of some kind of magical energy that he has to figure out how to get through.
One idea could be a fanfic where Sally has a special dream or vision involving Poseidon that gives her some hidden knowledge about Percy's future. For example, she might see a prophecy that only she can interpret and it leads her on a quest to find a lost artifact related to Percy's demi - god status.
One idea could be that Percy has to seek Hephaestus' help to repair a powerful weapon that is key to defeating a new threat. Maybe the weapon was broken in a battle against a mysterious monster. Another plot could involve Hephaestus tasking Percy with retrieving a special metal from a dangerous location, like the heart of an active volcano, in order to create a new, even more powerful weapon for the demigods. And perhaps there's a sub - plot where Hephaestus' children are in some sort of trouble and Percy has to team up with them to solve the problem.
One idea could be Percy having a vision or encounter with Hestia that leads him to a hidden part of the Underworld where the warmth of Hestia's hearth is the only thing keeping a powerful and dangerous entity at bay. He has to work with Hestia to keep it that way.