Chan Chuen directed this story about the many problems besetting Hong Kong youth when they reach that "energetic" age of 21.

A rich man's son believes himself to be the best kung fu fighter in Canton. Unfortunately, his father, anxious for his son's safety, bribes all his opponents to lose. After a humiliating defeat at the hands of an actor in a traveling theatre company, the son resolves to find a better teacher.

Wong Hsia Yuan is an old-fashioned martial arts master who's so behind the times that he'd rather his school be destroyed than change its ways. He may get his wish, thanks to the young, beautiful, intelligent Chan Mei Ling, who arrives from the states to open a new branch of the school. Armed with an unfamiliar, modern way of thinking, Mei Ling goes about recruiting new students in strange, and sometimes questionably legal ways. Yuan is furious, but when the local triads enter the picture, the two put their differences aside to take back the neighborhood.

A small town is protected by one of the famous Ten Tigers of Kwangtung. The town is very safe as Ti Lung and his Kung Fu students patrol for criminals. Enter the rival Kung Fu school whom Ti Lung's students have beaten in a lion dance competition and then humiliated in a brawl. The rival school is joined by an opium dealing Kung Fu master who plans to turn the town into a community of addicts!

When Ming, an inveterate gambler at mahjong, is given a lucky tablet by a blind peddler, his overwhelming greed takes over his life. Upon a lapse in winning, he is forced to sell his ancestral home, the Tao Tao mansion, unaware this home was the scene of a heinous sexual assault and murder during World War II and has been haunted ever since.