In a 'percy and thalia fight fanfiction', it might be that there's some sort of outside influence. For example, a new and powerful magical item has been discovered. Percy thinks it should be kept safe in Camp Half - Blood, but Thalia believes it should be taken far away from there to avoid attracting more monsters. This fundamental difference in their beliefs could lead to a fight. Thalia might start the fight with her spear, while Percy uses Riptide. Their fight could draw the attention of other demigods, who are then forced to take sides or try to stop them.
Well, it could be about a misunderstanding. Maybe Percy accidentally uses his powers in a way that Thalia misinterprets as a threat to her leadership among the demigods. So she lashes out at him, and Percy, not one to back down easily, fights back.
One possible plot could be that there's a prophecy that involves both of them, but they interpret it differently. Percy thinks they should work together to fulfill it in one way, while Thalia has a completely different view. This clash of ideas could turn into a physical fight. As they fight, they start to realize that they're both being a bit stubborn and that they might need to find a middle ground to actually deal with the prophecy.
The fanfiction could revolve around the relationship between Percy and Thalia as they work to safeguard Percy's guardian. It could show how their friendship or partnership develops during the course of their adventure. For example, they could start off not getting along so well, but as they face challenges, they learn to trust and rely on each other more.
One possible cause could be a misunderstanding. Maybe Thalia misinterprets Percy's actions as being too reckless and putting their mission or friends in danger. For example, if Percy decides to take on a powerful monster alone without consulting the group, Thalia, being a protective and cautious person, might see this as a threat to the team's safety and get into a fight with him.
One possible plot could be that Percy accidentally possesses Thalia due to a magical mishap. He then has to deal with her powers and her relationships while in her body. Maybe he has to keep it a secret from their friends at first.
A plot could be that Percy is given a prophecy that involves him having to form a new kind of family unit. He decides that adopting Thalia is part of fulfilling that prophecy. But in order to fully embrace this new family, they need to go on a journey to different mythological realms. In each realm, they face different challenges that test their relationship. For example, in the Underworld, they have to deal with Hades who is not too happy about their new arrangement. This forces them to rely on each other and grow closer as they overcome these obstacles.
One possible plot could be Percy finding Thalia in a difficult situation, like being hunted by some monsters. He decides to take her in and protect her. He teaches her about the demigod world and they form a strong bond as siblings. They train together to become stronger and face various challenges from the gods and other mythical creatures.
There are many possible plot ideas. For instance, in a fanfiction, Percy might get injured during a fight, and while Thalia is taking care of him, he realizes the depth of his feelings for her. Or it could be that there's a magical influence that makes Percy fall in love with Thalia, and they have to figure out if it's real love or just magic. Also, the idea of them being from different camps (like Camp Half - Blood and Camp Jupiter) and their love having to overcome the differences between the two camps could make for an interesting plot.
One possible plot could be that Percy and Thalia are tired of the constant battles and politics in their current world. Chaos offers them a new beginning. They join Chaos' forces and are trained in unique ways. Percy might use his water - controlling abilities in new and unexpected ways under Chaos' guidance. Thalia could also enhance her skills with lightning. Together, they go on missions to restore balance in different realms that are in chaos (in a non - traditional sense).
Perhaps it's a fanfiction focused on their relationships. They might form an unexpected bond in the story. Nico, who has often been a bit of an outcast, could find real friendship and acceptance from Percy and Thalia. They could start out on a simple quest, like finding a lost artifact, and during this journey, they learn more about each other and grow closer as friends.
One possible plot could be that after many adventures together, Percy and Thalia realize their deep connection. They might start with a small, secret ceremony among their closest friends from the demigod world. Their friends could plan a big celebration later. Percy's loyalty and Thalia's strength would make them a powerful couple in the fanfiction world.
One possible plot could be that Percy and Thalia have been through many adventures together and finally realize their deep feelings for each other. They decide to get married in a ceremony attended by all their demigod friends. There could be some challenges like an old enemy trying to disrupt the wedding, but with the combined strength of their friends, they overcome it and have a beautiful wedding at Camp Half - Blood.