 As a reward for winning the chariot race, Tantalus sends Clarisse LaRue to find the Golden Fleece and forbids anyone else from leaving camp without his permission.After having a talk with the god Hermes about the fate of his son Luke, Percy leaves camp with Annabeth and Tyson to find Grover.With the help of a hippocampus that Tyson names Rainbow, the trio reach the Princess Andromeda, a cruise ship filled with monsters and demigods that have allied with the titan Kronos.