Kao is attacked on his wedding night by his enemy Pai. Defeated and wounded, Kao managers to escape. He broods on vengeance. As Pai is the top fighter and as there is only one man, Chang, who is said to be able to stop Pai, Kao decides to cultivate Chang's friendship. Chang is very poor, but he has a good friend in Green who incidentally is his rival in love. Kao is the scheming type. First, he wants to test Chang's ability. He therefore arranges for a showdown between Chang and killer Pray. Kao also does his best for Chang's dying mother complete with a great funeral. Chang is grateful. Therefore, after he has killed Pray, he promises to help Kao. Green also volunteers to fight Pai alongside Chang...