Tung Tung just graduated from the police academy, encountering a Vietnamnese assassin on his first day on work. Tung in order to break through obstacle in his mind decides to join SDU. Among the teammates, Coolman feels resentment toward Tung, which he doesn't understand. Later he discovers Coolman is actually his step brother. Tung actively tries to get close to Coolman, but is rejected. When training reaches its last stage, Coolman and Tung's team reencounters the Vietnamnese assassin on a deserted island.
as Chan Hiu Tung
as Coolman Ho Chi Lam
as Karen Kook
as Annie Ng Ching Yee
as Eagle
as Hommie Chu Ka Choi
as Brother Fourth
as Lily Yuen
as Dummy
as Commissariat Chan Lik Wang
as Yuen Nam Sam
as Lolo
as Boss Big B
