Perhaps they tell Sally about their relationship. They might open up about how they overcame their differences and grew closer over time. They could share the little things, like how Percy always manages to make Annabeth laugh during tough times, and how Annabeth helps Percy think more strategically.
It could be that they are telling Sally about a threat they've discovered that could endanger not only the demigod world but also the mortal world she lives in. They might be seeking her advice on how to handle it, since Sally has a unique perspective as a mortal who is aware of the demigod world and has dealt with her own share of strange and dangerous situations.
One possibility is that they tell Sally about their latest adventure in the demigod world. Maybe they share details about a new monster they defeated or a mysterious place they discovered. For example, they could be telling her about a hidden temple filled with ancient magic that they had to navigate through to retrieve an important artifact for Camp Half - Blood.
Maybe in the fanfiction, Annabeth moves in to further study some ancient texts that Sally has access to. Percy is excited as he gets to spend more time with Annabeth. They face challenges like adjusting to living together, like who takes out the trash or does the dishes. But overall, they create a warm and loving environment, with Sally acting as a guiding figure for both of them.
Maybe Percy tells Sally about Annabeth's amazing adventures in the fanfiction. For example, her heroic deeds in battles against monsters.
Well, it could be because Sally is an important person in Percy's life. He trusts her and wants to share the interesting things about Annabeth from the fanfiction with her.
They could reveal secrets about the gods. For instance, they might tell Sally about some of the gods' more human - like qualities or their petty squabbles that are not widely known. Maybe they share a story about how Zeus and Poseidon were arguing over something trivial, like who had the better view from their respective thrones on Olympus.
Sally would likely become a mother figure to Annabeth. She would offer her advice and support, just as she does for Percy. Percy and Annabeth's relationship would become more domestic. They'd have more time to just be together, sharing small moments like having breakfast together in the morning. Their bond would strengthen as they face the normal day - to - day challenges of living together, along with Sally.
Perhaps Sally has some ulterior motive for seducing Percy. Maybe she's trying to get information from him or is part of a plot against him that she later has a change of heart about. She could use her charm and beauty to draw him in. She might start by dressing in a way that catches his attention and then use her wits to keep him interested. Along the way, Percy could be initially oblivious to her intentions but then start to fall for her as well, leading to a complex relationship dynamic.
I'm not sure about the specific plot as it's a rather inappropriate concept. Fanfiction should generally be based on positive and ethical themes.
In a 'Percy and Sally Reunion' fanfiction, Percy could return after being presumed dead. Sally has been mourning him all this time. His sudden appearance shocks and delights her. They hug tightly and don't let go for a long time. Percy then shows Sally his new powers or skills he's acquired during his time away. They also plan for a future where Percy can stay closer to home and help protect it, and Sally is just happy to have her son back in her life.
It might create some conflict initially. Percy and Annabeth could be worried about Sally's reaction, which could lead to some misunderstandings between them. However, as the story progresses, they could work through it and Sally could end up being a strong advocate for their relationship, adding a new dynamic to the fanfiction.
Perhaps Annabeth is forced to leave because of a prophecy. She believes that by leaving Percy with the child, she is protecting them both in some way. Percy then has to struggle with his own feelings of abandonment while also trying to raise the child. He might seek help from his friends at Camp Half - Blood, like Grover. Grover could help him understand the child's needs better as he has some experience with young creatures. The story could then follow Percy's journey of self - discovery as he becomes a more responsible and loving father.