Detective Chan is a muddling private eye in Bangkok's Chinatown who's prone to getting on the nerves of the local cops and trying out unorthodox investigation methods. When customer Lung turns up in his ramshackle office one day with a photo of an unnamed woman he says wants to kill him, and plunks an enticing wad of cash on his desk, Chan hops onto the trail. As he hits the streets in the local Chinese community armed with the woman's photo but no other clues to her identity, red herrings start to crop up and deaths occur around him. And when it becomes clear that there's a wider crime story afoot and that someone doesn't want Chan snooping around, the detective soon finds himself running for his life as well.