Well, it could be about their adventures in Goode High. Maybe they're facing some new mythical creatures that are lurking around the school. They might be trying to keep their demigod identities a secret while also dealing with normal high school stuff like exams and making friends.
The main characters are Percy and Annabeth. Percy is a demigod, son of Poseidon, with the ability to control water. Annabeth is also a demigod, daughter of Athena, known for her intelligence and strategic thinking.
Well, one possibility is that they face challenges related to hiding their demigod identities while trying to fit in at a normal high school. Maybe Percy has trouble in a swimming class because his powers make him too good and he has to hold back. Annabeth could be acing all her academic classes but struggle with the social drama that comes with high school.
Percy and Annabeth are the central figures. Percy has had many adventures in the world of Greek mythology before coming to Goode High School. Annabeth has been his partner in many of those adventures. At Goode High School, they are just two students on the surface, but they carry all their demigod experiences with them.
Well, they might have an adventure right there at the high school. Maybe they discover some mysterious things in the school's basement or encounter a new mythical creature that's lurking around the campus.
One possibility is that Percy is in the middle of a boring class at Goode High when Annabeth shows up. He might be so shocked and happy that he forgets all about the lesson. They could then sneak out to a quiet place in the schoolyard and catch up on all their adventures and how much they've missed each other.
It's possible that they have an adventure related to a school project gone wrong. For example, if they are doing a project on Greek mythology and accidentally summon a minor deity or a mythical creature. Then they have to figure out how to send it back without causing chaos in the school and also keep it a secret from the regular students.
Some of Percy's classmates might be in awe of Annabeth. She's smart and confident, so they could be a bit intimidated at first. But then they start to admire her for her knowledge.