In order to save Olympus, Emily and her winged horse, Pegasus, venture to Hawaii--and a Hawaiian volcano--in this fifth book of an exciting series that puts a modern thrill into ancient mythology. The ancient rivalry between the Olympians and the Titans has been rekindled. However, this time the Titans have a secret weapon--a weapon that rivals the Flame of Olympus. The balance of power is tipped in Saturn's favor now that he has found his own Flame...