Old Mr. Lo has three sons and the youngest one Lo Kung is his favorite. However, Kung does nothing but fool around all day long. Old Mr. Lo is very annoyed about this. The relationship between father and son is thus affected. So on Kung's birthday, his two brothers decide to play a joke on him. They trick him into believing he has won the lottery. Kung is so happy that he spends a tremendous amount of money. When he realizes he is in huge debt, he pretends to go insane and the whole family believes him.

Chung Yao, a martial arts expert, has long been on the run from his stepbrother, who he caught trying to rape his wife on their wedding night. His brother has never given up the chase however, and Chung Yao live in constant fear that the vengeful stepbrother will murder him and his wife.

When Fu suffers a heart attack, his relatives hover around him hoping to get a slice of his great wealth. But despite his illness, the old man clings stubbornly to life. So greedy family members plan to murder him, intending to make nurse Daisy a scapegoat.