Identical twins are separated at birth, one becoming a streetwise mechanic, and the other an acclaimed classical concert conductor. Finally meeting in adulthood, they're mistaken for the other and entangled in each other's worlds.

Jackie Chanas Ma Yau (John Ma) / Bok Min (Boomer)
Teddy Robinas Tarzan (Tyson)
Maggie Cheungas Barbara
Nina Li Chias Tong Sum (Tammy)
James Wong Jimas Mr. Ma
Sylvia Changas Mrs. Ma
Kirk Wong Chi-Keungas Crazy Bull
David Chiang Da-Weias Sgt Chiang / Hotel Security
Mabel Cheung Yuen-Tingas Tsui
Alfred Cheung Kin-Tingas Boss Yung
Arthur Wong Ngok-Tai