Gu Sanqiu, a modern social animal, wakes up and travels to a strange world shrouded in thick fog all day long. He became the sacrifice officer of "Ashwood Town" and was bound to a cold "sacrifice management system". The mission of the system is simple and crude: regularly offer living sacrifices to please the unspeakable existence in the fog, in exchange for the peace of the town. If the mission fails, he and the entire town will become sacrifices. Facing terrifying monsters attracted by the breath of living people, and a fatal system that regards life as a KPI, Gu Sanqiu is forced to make a choice between human morality and self-survival. In the bloody sacrifices one after another, he gradually discovered that the truth of the world and the sacrifices seemed different from what he thought. The sacrifice he offered seemed... Something wrong.
