In this fanfiction, a possible plot is that Percy is suddenly thrust into a world where the rules of the demigod world as he knew it no longer apply. Since he's the son of Chaos, the very fabric of reality around him starts to change. He could find that his old friends at Camp Half - Blood are both in awe and a bit scared of him. Percy then has to decide whether to use his new powers for good or to seek revenge on those who have wronged him in the past. He might also be hunted by powerful forces who want to either control him or eliminate him because of his connection to Chaos.
One idea could be Percy having to learn new powers that are unique to being the son of Chaos. For example, the ability to manipulate time in small ways or create portals to different realms that are only accessible to him. Another plot could involve Percy facing off against the traditional Greek gods who are threatened by his new status and powers.
One idea could be Percy having to balance the powers of chaos and order within himself. Maybe he discovers a new ability that is a blend of both, like creating temporary portals that are stable due to order but lead to chaotic realms. Another plot could involve Percy being the key to preventing a war between the forces of chaos and order. He has to convince both sides that co - existence is possible.
A possible plot for 'Percy is a Son of Chaos' fanfiction could be Percy being sent on a mission by Chaos itself. This mission could be to restore balance in a part of the universe that has been thrown into chaos (ironically) by some dark force. Along the way, he teams up with some unlikely allies, some of whom are also children of primordial entities. They all have different motives and powers, and Percy has to learn to work with them while also coming to terms with his own identity as a son of Chaos.
One plot idea could be Percy's struggle to balance his new identity as Lady Chaos' adopted son with his existing relationships in the demigod world. He might face suspicion or envy from his old friends. Another idea is that he discovers new powers related to chaos, which he has to learn to control quickly to face an emerging threat. Maybe there's a prophecy that only he, as the son of Lady Chaos, can fulfill, leading him on a quest across different realms.
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.
One idea could be that Percy discovers a hidden connection to Chaos while on a quest. Maybe he stumbles upon an ancient artifact that has the power of Chaos within it, and it starts to change him in unexpected ways. For example, he might gain new powers that are related to the primordial chaos, like the ability to manipulate energy in a more chaotic and unpredictable form.
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.
One idea could be Percy facing a new type of monster that is immune to water. This would really challenge his typical combat style. Another could be Percy having to team up with an old enemy to defeat a greater threat that endangers both the mortal and demigod worlds. Maybe he has to journey to a completely unknown realm within the Chaos to retrieve a powerful artifact that is the key to saving his friends.
One idea could be Percy discovering his new role as the Father of Chaos gradually. Maybe he starts having strange dreams or powers that he can't explain at first. For example, he might accidentally create small chaos portals without realizing it. Another plot could involve Percy having to deal with the other gods' reactions. Some would be fearful, while others might see it as an opportunity to gain power through him.
One idea could be Percy losing the Blades of Chaos and having to go on a quest to retrieve them from a powerful new enemy. Maybe a dark sorcerer has stolen them to use in a ritual that would bring chaos to the mortal and demigod worlds.
One idea could be that Percy has to team up with Lady Chaos to stop a new threat that is emerging from the Underworld. This new threat is causing chaos (ironically) among the gods and demigods alike. They have to journey through different realms, facing various monsters and challenges along the way.