1942, Nanjing (Nanking). Following a series of assassination attempts on officials of the Japanese-controlled puppet government, the Japanese spy chief gathers a group of suspects in a mansion house for questioning. A tense game of cat and mouse ensues as the Chinese code-breaker attempts to send out a crucial message while protecting his/her own identity.
When a spate of eerie murders erupts across HK two troub/emaking cops are assigned to the case. Young maverick Wang and grizzled vet Huang who is fed up with his reckless younger partner always landing them in hot water. Reaching a dead end after discovering all the victims were former boyfriends of aspiring starlet Liu, the detectives must play a deadly game. One of them must go undercover as Liu’s lover to lure the killer out.
A debt collector receives a call from a woman who is kidnapped by an unknown gang. He thinks it is a joke but soon, he realises that it is not a prank.