Six years ago, a young boy stumbled into Camp Half Blood, holding a minotaur's horn and sobbing incoherently. "He's the one," a girl whispered. "He has to be." Now it seems obvious that he is not "the one." No one has gone on a quest since Luke disappeared, and Chiron has locked the attic tight. All the campers can do is train and try to keep themselves entertained in the summer he