One rainy night in a arms factory near Shanghai, a female worker accused of stealing a box of bullets from the ruthless Boss Ding (Liu Kai Chi) is violently killed in a game of poker. Half a month later, a number of inexplicable deaths occurs at the mill but no bullets have been found. Rumors of a mortal curse start to disperse terrorizing the workers there. So, bizarre police inspector surfaced Donglu (Lau Ching Wan) along with his hot-blooded, gun-slinging partner Guo Zhui (Nicholas Tse) are sent in to investigate the mystery of the ghost bullets...