weapons. Lau needs time to get them, but assures Chow he will deposit them two hours before the arranged handover to Fu in the bowling alley. Meanwhile Hung packs her bags to take a flight to Canada with Tso, an older business man who had offered before to leave his wife for her. When Chow learns about that on the telephone, he asks her to marry him immediately to change her mind. Hung tells him to prove he's sincere by showing up at the register office at 10:00 am the next day, but the following day she waits there in vain with her friend Rose. On his way to the bowling alley, Chow is tailed by policemen. When he realises this (and since having the guns is a crime) he calls Lau. Lau tells him that the policemen are from Chan's department and orders him to proceed while he would sort out the situation with Chan. When talking to Chan he mentions Chow as an informer, but keeps his status as an undercover cop a secret. Chan refuses Lau's request to call off the tail on Chow. Now on his own, Chow shakes off his police pursuers at an MTR station by boarding a departing train. While getting the bag with the guns, he notices Fu at the bowling alley. As he leaves the building, the police arrive. Chow manages to escape by jumping from a window and is picked up at street level by Fu who's approaching in a car. They drive to the gang's hideout since their leader wants to meet Chow. He offers Chow the chance to participate in an upcoming big holdup. Fu drives Chow to the airport where he meets Hung, who's about to board a plane to Canada with Tso. Chow tries to change her mind, but is arrested by the police for selling weapons (while Hung boards the plane). At the police station, Chow is beat up and tortured by Chan's men who want to know the buyer of the weapons. Chan's superior enters the room, orders Chan's men to release Chow and calls Chan and Lau into his office. Lau admits to having given Chow the weapons for the weapons deal, but keeps quiet about Chow being an undercover cop. Since illegal possession of a firearm is a minor offense, Chan proposes that Chow participates in the holdup to catch the robbers