When the thief Cheung Peter (Andy Lau) learns that he has only four weeks left to live, he decides to avenge his father who was killed by a gangster boss (Lee Chi-hung). To this end, he carefully plans to rob the finance company next to the gangster boss's transportation company, and takes hostages to attract Ho Sheung-sang (Lau Ching-wan), a senior negotiation expert who was transferred to a civilian position for offending his superiors. Ho Sheung-sang was defeated repeatedly when he was chasing Cheung Peter, but gradually realized that the gangster boss actually used the transportation company to do illegal jewelry smuggling business. So he and Cheung Peter turned enemies into friends and joined hands to start a game of wits and courage with the gangster forces. While escaping from Ho Sheung-sang's pursuit, Cheung Peter accidentally met the girl Leung Wanting (Yvonne Mung), and at the end of his life, he got a romantic fate.