A trio of mysteries in Hong Kong.

Three stories. Friends: the married Kit encountered Chun again who he met 3years ago in a scuba diving class, Kit's logic is clouded by desire, slowly falling into Chun's trap - - "Strange Murder Case": A certain Nightclub held its second anniversary celebration, the cheers were shattered by a loud cry, as man A was murdered. At the same time, man B was discovered in his home covered in blood. On the surface the two cases were unrelated, actually they were done by the same criminal - - "Midnight Witness": On a boat, Bong thought he witnessed a murder, but when he approached the scene, he suddenly met the victim face to face.