Well, perhaps the plot involves Percy being hunted by various forces. The Olympians see him as a threat because of his Chaos lineage, and the minions of Chaos might think he's too much of an Olympian. He then has to form an unlikely alliance with some demigods and minor gods who believe in his unique potential. Along the way, he uncovers secrets about the origin of the gods and the true nature of the relationship between Hera and Chaos.
One possible plot could be Percy discovering his new parentage of being the son of Zeus and Hera. He might struggle with the new identity as it goes against what he previously knew. For example, he could face challenges from the other demigods who are suspicious or jealous of his new status. He then has to prove himself worthy of this new heritage while also dealing with the complex politics among the gods.
One possible plot twist could be that Percy, as the son of Hades and Hera, discovers a hidden power within him that can control both the underworld and the aspects of Hera's domain like marriage and family. This power could put him in the middle of a great conflict between the gods who are jealous of his unique abilities.
Well, the plot could involve Percy's newfound status as the son of Chaos bringing all kinds of chaos (pun intended) to his relationship with Perlia. Maybe he has new powers that are hard to control and Perlia has to help him. It could also be about them facing new enemies together that are drawn to Percy's connection to Chaos.
Well, it could be that Percy is tricked into believing the son of chaos is a threat when he's actually not. Maybe some other characters manipulate Percy's perception with false evidence.
A possible plot could be that the Primordial Son of Chaos is slowly being awakened by the actions of the modern world. Percy senses this disturbance in the fabric of the cosmos. He then embarks on a journey to find out more about this entity. Along the way, he meets old foes and new friends. The story could involve a race against time as Percy tries to prevent the full awakening of the Primordial Son of Chaos if it's going to bring destruction, or he could be trying to ensure its proper awakening if it's meant to bring balance.
The plot could center around Percy's transformation into the 'Son of Chaos'. He might have to face challenges that test his loyalty to his old friends at Camp Half - Blood while also adapting to his new role. He may also encounter new characters who are either allies or enemies in this new phase of his life. It might also involve a power struggle within the chaotic realm where he has to prove himself worthy.
The plot could revolve around Percy's relationship with his divine parents. Since Zeus and Hera have a complex relationship themselves, Percy might struggle with their expectations. Maybe he's caught in the middle of a power struggle between Zeus and Hera's different ideas of how he should use his powers. He could also be trying to unite the camps of different god - related demigods under his leadership as the son of two major gods.
Well, perhaps in a fanfiction, there's a spell or some sort of magical mix - up that causes Percy and Hera to share a kiss. This kiss could then set off a chain of events. For example, it could create a strange bond between them that allows Percy to see into Hera's memories. He then discovers a long - forgotten secret about the gods that he has to use to save the world, all while trying to keep his relationship with Hera a secret from his fellow demigods who would be horrified at the thought.
One possible plot could be Percy finding himself in a strange situation where he is made Hera's husband against his will. He might then have to deal with the politics and power plays in the Olympian world as Hera's consort. He could try to find a way to break this strange bond while also facing the wrath of other gods who are either jealous or suspicious of his new position.
One possible plot could be Percy's struggle with his new identity. Since Hera is the goddess of marriage and family, Percy might find himself in a very different family dynamic. He could be thrust into the middle of godly politics more than ever as Hera's adopted son. For example, he might have to deal with the jealousy of other gods' children who see him as having an unfair advantage.