Percy, young demigod, can definitely not consider normal schooling; hardly has he reached the door of his new college he is forced to fight a battle worthy of Greek mythology culminating in the burning of the establishment. Percy hurriedly returns to the colony from Half-Bloods, but the disquiet. Indeed Luke, their mortal enemy, is working to find a secret passage in the labyrinth of Daedalus to enter and attack the colony. A new quest is organized to reach the Daedalus workshop and prevent Luke to get his way. A new entertaining quest, rhythmic and inventive. This time the reader discovers in a new light the labyrinth of Daedalus. Percy is always an endearing adolescent, brave and loyal friend.