Lam, a cop approaching 40 but without much accomplishment, always wants to achieve something memorable before his retirement. He is obliged by his sister to find a decent Chinese girl for his nephew, Baffalo, who is an "American Born Chinese". But Baffalo has an eye for a sweetie, Ellen, who has accidentally witnessed a murder. The incident gets Lam, Baffalo and Ellen being involved in a ruthless underground arms smuggling ring, wich sends the killer to eliminate them.

Tiger on the Beat is a fast-paced action-comedy movie set in Hong Kong. It follows the story of a heroic cop and his eccentric partner as they battle a ruthless gang of Triad members. Filled with explosive action sequences and hilarious comedy moments, this movie is a must-watch for fans of the genre.