Two polytechnic students, Kai En and Shi Ping, partner each other on a supernatural mission: helping a Grim Reaper, No. 748, capture truant ghosts who don't want to leave the mortal world. However, these two 'ghost-catchers' are a peculiar pair: Kai En is a ghost who has 'lost' her body. And Shi Ping is the only student in the entire school who can see her. Kai En also enlists the help of Shi Ping to reunite her wandering spirit with her body. However, solving the mystery of Kai En's disappearance will put them both in grave danger, and risk the lives of those closest to them.