Five friends are released from prison and do their best to stay out trouble. While trying to mind their own business (and run their 5-Star Cleaning Service), they are caught up in a war between rival Triad gangs fighting for control of the counterfeit currency market.

Having defeated the best fighters of the Imperial Japanese army in occupied Shanghai, Ip Man and his family settle in post-war Hong Kong. Struggling to make a living, Master Ip opens a kung fu school to bring his celebrated art of Wing Chun to the troubled youth of Hong Kong. His growing reputation soon brings challenges from powerful enemies, including pre-eminent Hung Gar master, Hung Quan.

It's the 1940s, and the notorious Axe Gang terrorizes Shanghai. Small-time criminals Sing and Bone hope to join, but they only manage to make lots of very dangerous enemies. Fortunately for them, kung fu masters and hidden strength can be found in unlikely places. Now they just have to take on the entire Axe Gang.