The story begins with a secret: the monumental incident that caused Renton's father to disappear. Adroc Thurston was the only one with the power to rectify his mistake, and with the enigmatic Eureka as his companion, he catalyzed the event that changed everything and made him a hero. Now, ten years later, Eureka is gravely ill and Renton leaves the crew of the Gekko. But when he is taken in by his father's former comrades, he is faced with a decision: stay with the loving family he has always wanted or strive to win the affection he desires.