Cheuk is a mainland security officer who's thrown into a race against the clock when he discovers a man is holding an entire school hostage in exchange for his adopted son, so it's up to Cheuk to use his formidable martial arts skills to retrieve the boy and bring him back before the man decides to kill everyone.

While investigating murder cases involving masked rapists, Officer Ling herself is raped and her husband murdered by the suspects, on their wedding night. Rather than relying on her fellow police officers to solve her case, Ling chooses to use her own body as the weapon to take revenge on her violators.