Few years ago, Sergeant Kong in a mission to capture the head of the “East Rail Corporation” met with Yip Fung who killed the head of East Rail instead. Kong shot at Yip but missed and only a finger was left in the scene. Kong suspected that Yip might be a robot and thus kept a close watch on her, but later turned that he fell in love with Yip.

One night, Ko Kit accompanied with four assistants launched a campaign to stal the “Crystal” in East Rail Main Building. Ko was successful in Breaking through the security system and got the crystal but at the same time Yip also rushed to join in the robbery.