In a world forsaken by God, where souls linger in limbo and life faces extinction as death is thwarted, young Ai becomes the village's latest Gravekeeper. Tasked with guiding the departed to their final destination, Ai unravels the village's hidden truths when confronted by a mysterious gun-toting stranger. As she grapples with her role and the enigma of eternal life, Ai embarks on a journey to bring peace to the restless dead. Yet, in a realm where mortality is elusive, she questions the true nature of salvation.