Four mismatched and contentious Hong Kong couples consider swapping partners but realize they're happier as they are.
Lau Ting Kin
Bluffer Jim
Lau Pei
Dried Pork
Lo Kar Ling
Yo
Chow Si Pak
Auntie Man
Ching
Man Man
Tak
Cocktail waitress at disco
Mr Kwan's Bodyguard
