Perhaps Percy pretends to be a new student transferred to Annabeth's high school. He acts all mysterious and then during a class project, he reveals his true identity. Annabeth would be shocked and excited at the same time. Or, Percy could come in during a school dance. He asks the DJ to play their special song and then he steps out onto the dance floor to surprise Annabeth.
Percy could show up at Annabeth's high school during a big event like a pep rally. He sneaks in, disguised as a delivery person. When he finally reveals himself to Annabeth in the middle of the crowd, she's shocked but overjoyed. They hug and Percy tells her he couldn't stay away any longer.
Well, perhaps Annabeth decides to surprise Percy at his high school by disguising herself as a new student. She enrolls in the school for a day and joins Percy's class. When Percy sees her sitting there, he can't believe his eyes. She then reveals her true identity during lunch break and they have a sweet reunion, sharing stories about their latest demigod adventures.
Maybe Percy brings her a special gift from his adventures, like a unique seashell. Annabeth would be really happy and they might share a sweet moment in the schoolyard.
Well, a great plotline could be Percy and Annabeth trying to start a club in high school related to ancient Greek mythology. But they face opposition from the school administration who think it's too 'out there'. And then there's the whole thing about them having to balance their demigod duties with high school projects and exams. It adds a lot of drama and humor as they struggle to fit in and still be true to themselves.
One interesting plot could be Percy and Annabeth teaming up for a school project. They might face challenges like different study habits but in the end, they learn to work together and their relationship grows deeper. Another could be Percy getting into trouble with a school bully and Annabeth using her wits to get him out of it.
Perhaps in a fanfiction, they kiss after a long separation. Percy has been away on a mission for a long time, and when he returns, Annabeth can't hold back her feelings anymore. Their kiss is full of longing and relief at being reunited.
One interesting scenario could be Percy and Annabeth getting lost in a magical forest that only appears in fanfiction. They might have to use their combined skills and knowledge to find their way out, facing strange creatures along the way.
One interesting scenario could be Percy and Annabeth finding a hidden, powerful weapon in Tartarus that gives them an edge against the monsters there. Maybe it's a sword that can cut through the very fabric of Tartarus's darkness.
One idea could be a high school talent show where Annabeth and Percy team up for a project that combines Annabeth's strategic mind and Percy's natural athleticism. They could create a unique performance that showcases both their skills and also their growing relationship.
In some fanfictions, there could be a plot where Annabeth is jealous of a new girl who seems to be getting too close to Percy at school. Percy, on the other hand, is oblivious to the girl's intentions. Annabeth has to deal with her own insecurities and at the same time figure out how to make Percy realize what's going on without sounding too possessive. This kind of love triangle - ish situation can add a lot of drama to the story.