Keith Ko has a comfortable life living on his inheritance with his stable job as a police coroner, although the smell of formaldehyde in the morning isn't helping his love life. But when he arrives at work early to find that the autopsy of his dead policeman has already been carried out, he smells something else: corruption at the local cop shop. After five years deep undercover, Fred Cheung sets out to prove that the decapitated corpse in the boot of his car doesn't belong to his partner Herman, taking refuge in the apartment of bargirl Ling and finding unlikely support from Ko.