The year is 2067. An evil emperor has taken over and thrown the world into chaos and destruction. Delilah Stone, at seventeen, has been forced to follow in her brother's footsteps as the emperor's assassin. This is her story as she is sent on a journey to spy on and kill a group taking refuge in the mountains. There she meets Koen and Bernie, a boy with a past as scarred as her own, and an old man whose wisdom guides her into the light. Together, can they bring down the emperor and restore the world to its previous glory?