Biggie and Tiny grow up together. They fight all the time. Biggie is a detective and Tiny is a thief. Biggie has the satisfaction of catching Tiny and putting him behind bars. When Tiny is released, he is approached by Daigau who wants Tiny's help to steal the world famous diamond.

Kwong and Ming, two boys from rural China, sneak into Hong Kong to get quick rich. But they are instantly disillusioned and they get into messy situations. The superstar who looks exactly like Kwong has a nasty spill in a dangerous stunt and dies. Kwong is recruited to stand in. Money and all life's amenities become available to the pair. While Ming makes the best out of the situation by gambling and womanizing, Kwong realizes that his own amazement money is not everything.