Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older ...

During China's Warring States period, a district prefect arrives at the palace of Qin Shi Huang, claiming to have killed the three assassins who had made an attempt on the king's life three years ago.