It's a year after the war with Voldemort. People are mourning and perhaps the worst of them all are Harry Potter, Hermione Granger, and Ron Weasley. When McGonagall states that everyone must repeat the previous year of school, the three heroes find themselves on the Hogwarts Express back to school. But as everyone knows by now, Hogwarts is never peaceful and uneventful, even with Voldemort gone. It's a year after the battle at New York with Kronos and his army. The Demigods are mourning, but are training harder than ever and taking on new quests. But when one new girl comes to the Camp, and Nico has a disturbing vision concerning another war, the Demigods find themselves engaged in another battle with Kronos and his new target; the wizards of Hogwarts.

My mother, Khione, smiles at me wickedly, "Break the seven apart. Turn demigod on demigod, make sure there will be no possible way for Gaea to lose." My name is Chaselynn Mari Scott, Chase for short. I'm a demigod who was recently convinced Camp Half-Blood and Jupiter were evil and Gaea was good. I took my mom's advice to go to Camp Half-Blood and tear the seven apart so they will not succeed. However, on the way along, I never thought I would actually start to fall for Leo Valdez.

Percy and his friends end up meeting the Kanes at Goode High School. You can guess what happens after that. They meet, things go "BOOM!" and such.

Kristen Black lost her best friend right after their 14th birthday; after she walked into the woods and disappeared; after a boy she grew close to came and left. No one knows if Diana is alive or dead, not a trace of her was left. Three years later on her 17th birthday, strange things start to happen. On a camping trip celebrated with her friend Alfire and her parents, went horrible wrong when an overnight lake nap away from camp resulted in her parents disappearance... gone...kidnapped. When on a search for her family Kristen encountered a beast that had chased her and Alfire into a hole of darkness, and into a strange camp; where Kristen runs into the one person she never thought she would ever see again.