Well, it could be a story where Percy and Annabeth are chosen to represent Athena in a grand tournament among the demigods. This tournament is not just about physical strength but also mental acuity, which is where Annabeth shines. Percy has to learn from her and they both grow closer as they train together. But there are other demigods who are jealous of their selection and try to sabotage them.
A plot could revolve around Athena being in some sort of trouble, perhaps a spell has been cast on her that makes her lose her wisdom temporarily. Percy and Annabeth must find a way to break the spell. Along the way, they encounter old enemies who try to take advantage of Athena's weakened state. They also have to deal with the power dynamics between them as Percy is a son of Poseidon and Annabeth is a daughter of Athena, two often rival gods.
One plot idea could be that Athena tasks Percy and Annabeth with a special quest that involves retrieving a long - lost artifact of hers. This could test their relationship as they face various challenges together. Another could be that Athena reveals a long - hidden secret about Annabeth's family that Percy has to help her come to terms with. Maybe it's something that changes their perception of their destinies within the demigod world.
One idea could be that Percy has to seek Athena's wisdom to solve a complex mystery in the mortal world that is somehow related to the gods' ancient secrets. Maybe it involves a powerful artifact that was lost long ago and only Athena's knowledge can lead Percy to it.
Another plot could involve Percy getting a vision from Athena about a future threat to the demigod world. But the vision is so cryptic that he has to work closely with Athena to decipher it. Along the way, they build an unexpected bond, different from his usual relationships with other gods. Maybe Percy starts to see Athena not just as a powerful deity but as a mentor figure, and Athena starts to respect Percy's tenacity more than she expected.
One idea could be Percy trying to prove himself worthy in Athena's eyes. Since he's her brother in this fanfic, he might strive to show his intelligence and strategic skills, much like Athena is known for. Maybe he enters a competition within the demigod world that tests both physical and mental prowess.
One idea could be Percy having to go on a quest that involves both Athena and Artemis. Maybe he has to retrieve an ancient artifact that is sacred to both goddesses. Another could be a story where Percy gets caught in the middle of a feud between Athena and Artemis over a new demigod's loyalty. For example, the new demigod shows great skills in both wisdom (Athena's domain) and hunting (Artemis's domain), and the two goddesses start to compete for the demigod's allegiance, with Percy trying to keep the peace.
Perhaps Athena's love for Percy causes a rift between her and her daughter Annabeth. This could lead to a complex story of family drama, loyalty, and love. Or, in some fanfictions, there could be a plot where Athena's love is a curse placed on her by an enemy, and Percy has to find a way to break the curse, all while they both struggle with their new - found emotions.
One idea could be Percy going on a quest to find a lost artifact of Athena that has the power to restore balance in the world of the gods. Another could be Percy having to face off against a powerful enemy who is specifically targeting him because of his relation to Athena. Maybe he discovers some long - lost siblings also sired by Athena during his adventures.
One idea could be that it's all a big misunderstanding. Maybe Annabeth thought Percy did something to endanger their quest, like made a deal with a suspicious character without telling her. So in her anger and fear for their safety, she hits him. But then they quickly realize it was a miscommunication and have to work together to fix the situation.
One idea could be a moment of comfort. Maybe Percy has had a really tough battle and is shaken up. Annabeth touches his hand gently to let him know she's there for him, and this simple touch leads to a deep conversation about their future together. It could also be a situation where they are exploring an ancient ruin. Annabeth touches Percy's arm to stop him from triggering a hidden trap, and from there, they work together to decipher the secrets of the place. Another plot idea could be a dream sequence where Annabeth's touch has a magical or prophetic meaning, and they have to figure out what it all means in relation to their quest.
One idea could be their first meeting at a summer camp for demigods. Maybe Percy is lost and Annabeth, being the smart one even as a kid, helps him find his way around. Another plot could be them teaming up for a camp quest. They might face a minor monster together and learn to rely on each other's strengths, like Percy's courage and Annabeth's intelligence.
Perhaps there's a curse on their neighborhood that only they can break. They have to work together, using Percy's powers over water and Annabeth's wisdom. They might start by researching in the local library, then go on adventures around the area to find clues. Along the way, they meet new characters, some friendly and some not, and their relationship grows stronger as they overcome each obstacle.