San Kuai

Two Hong Kong cops are sent to Tokyo to catch an ex-cop who stole a large amount of money in diamonds. After one is captured by the Ninja-gang protecting the rogue cop, the other one gets his old Orphanage gang, dubbed the "Five Lucky Stars," to help him. They don't like this much, but they do it.

After being punished for getting into trouble, a mischievous young man is sent to train under a brutal, but slovenly old beggar, who teaches him the secret of the Drunken Fist.