Billionaire Law and his accomplices are conspiring the murder of a judge. The conspiracy is overheard by a inspector from ICAC who records the meeting on a cassette tape. Billionaire Law is determined to pin him down. Before he dies, he hides the tape in a reporter Mel's car. A young man, Law Kim Long, smuggles into Hong Kong to look for his father. The Snake-head is mistaken him to be Billionaire Law's son, so he makes him groomed. However, Law sneaks out to look for his father and runs into Mel. He finds out his father was dead. When Law feels depressed, Mel looks after him. The Snake-head tries to break up their relationship and bring him to Billionaire Law. Meanwhile, Billionaire Law is mistaken them as detectives from ICAC. He takes them into custody and forces them to return the subject tape. Finally, they manage to escape and disclose the secret of the tape. After all, Billionaire Law is arrested.
