A sudden downpour shattered the bustling nighttime scene in S City. After that night, nearly everyone who received a mysterious white envelope suddenly died within a week, and the shadow of death instantly fell over the city. Strangely, though, people soon forgot all about it. It was as if everything in the city had changed without anyone knowing. A white, anonymous letter from the abyss led the protagonist, Fu Yunzhou, into an unknown world. The story of his journey toward death is slowly beginning to unfold...
