Anthony Chau-Sang Wong (John Wu)Ching Wan Lau (Peter Chan)Esther Kwan (Mary Kwan)Alexander Chan (Crazy Bomber)Tin Sang Lung (Ken)Tung Cho 'Joe' Cheung (Police Chief)Lin Ho (Police Chief's Wife)Parkman Wong (Inspector Wong)Do-Yu Lee (Inspector Lee)Kwong-Chin Tsang (Gambler)Wai-Si LeeJamie Luk (Chow)Chan Kin Yung (Policeman)
John and Peter are best friends and both work for the Bomb Disposal Unit. After a wild night of drinking, they find themselves both had sex with a girl, Mary. A few weeks later, Mary learns that she's pregnant. Who's the father?