An assassin is shot by her ruthless employer, Bill, and other members of their assassination circle – but she lives to plot her vengeance.

Shu-wei is an unpopular student who is a constant target for the school bullies, but he ends up joining forces with them when they encounter two demonic sisters who feast on human flesh in the middle of the night. The gang manage to capture one, but the other demon is angry and starts killing anyone wearing a school uniform.