The giant war is over. Voldemort is about to come back completely. Harry needs help and Chiron knows it. The only one fit for the job is Percy Jackson Son of Poseidon. What happens when he sends Percy to Hogwarts blessed by Hecate. Harry and his friends are just excited for Hogwarts. But the triwizard tournament makes for a dramatic school year. I suck at descriptions. Sorry. Also I do not own either one of these amazing series. Percy jackson and the Olympians/ Heroes of Olympus, both belong to Rick Riordan; their author. The Harry potter series belongs to j.k.rowling; their author.