Awakening in the blue caves of the afterlife, Lemy remembers nothing but a handful of fleeting memories of her parents.

Standing before the Gates of Judgment, the gatekeeper delivers a grim verdict: Lemy has committed a sin demanding a 1,000-year sentence in Hell. Unwilling to suffer for crimes she cannot recall, Lemy accepts the gatekeeper's alternative offer—to hunt down the monsters currently overrunning the underworld.

Lemy must survive in a strange, zero-gravity world, battling monstrous manifestations of sin. Master a unique, mouse-driven control system to guide Lemy and save her from suffering a second death.

Throughout the afterlife, Lemy will encounter a diverse cast of wandering souls. Compassionate by nature, she often puts her own heavy burden aside to help them. Fortunately, befriending the dead proves invaluable in her fight against the monsters. Embrace Lemy's altruistic spirit to gain the upper hand.

In this vibrant afterlife interwoven with countless untold stories, Lemy's lost memories will slowly resurface. Discover the truth behind her forgotten sins and the hidden nature of this quiet girl as you reach the end of her long journey.