Humankind has escaped a dying Earth and set out to find a new home among the stars aboard an immense generation ship—the Ark. Bryan Benson is the Ark's greatest living sports hero, enjoying retirement working as a detective in Avalon, his home module. The hours are good, the work is easy, and the perks can't be beat. But when a crewmember goes missing, Bryan is thrust into the centre of an ever-expanding web of deception, secrets, and violence that overturns everything he knows about living on the Ark and threatens everyone aboard.