Fung and Pan, two policewomen, are assigned to protect a gangster's mistress turned police informant. Her lover orders her assassination, but the attempt fails. In a desperate bid to prevent her going to court, he threatens to kill Pan's stepfather. Pan has no choice but to leave the police force in order to protect her family and seek her revenge.

Fung and Pan, two policewomen, are assigned to protect a gangster's mistress turned police informant. Her lover orders her assassination, but the attempt fails. In a desperate bid to prevent her going to court, he threatens to kill Pan's stepfather. Pan has no choice but to leave the police force in order to protect her family and seek her revenge.