When people are consumed by regret and wish to turn back time, demons called Horologue answer, feeding on that time and aging their victims in reverse. Victo, a Chronos Ruler who hunts these creatures, travels with his son Kiri, taking work wherever remorse has summoned one. Victo looks far younger than his thirty-nine years because part of his own time was eaten long ago, along with the memories attached to it, and getting that back is what keeps the two on the road.