With his eye on a gangster's girl, Inspector Wong (Pak-cheung Chan) assigns three undercover policemen (Chapman To, Shawn Yue and Chi Chung Lam) to dig up something -- anything -- that will prove the gangster is involved in illegal activities. But what can you do when there's nothing to find? Meanwhile, the gangster in question has his own man working inside the police department. Jing Wong directs this update of his 1987 comedy, The Romancing Star.