Three years after his arrival onboard, Tommy begins Specific Training to assume his place in his father's society. The transition to adulthood, laden with unexplored emotions and overwhelming responsibilities, have made this unstoppable change too much to handle. Tommy wants to go back home, to Earth, to a way of life he'd been forced to leave behind. An unforeseen attack on his father, a disaster on Earth, and the added weight of responsibility take their toll on the young man, who suddenly finds himself struggling to save the ones he loves.