Two half-brothers are reunited after a long break, only to perpetuate an old feud over their desire for the same woman.

The swordsman Zhang Zhen is injured in a misadventure and rescued by Eldest Sister of Changchun Sect, who has a crush on him. However, Zhang falls in love with the maid Yuenu instead, and conceives twins with her. The couple are killed by a group of evil pugilists later. The Eldest Sister is angry with Zhang Zhen for not accepting her and plans to make Zhang's children kill each other as revenge. The baby girl (Xiaolu'er) is saved by Zhang's friend, Lian Lanyan, while the male infant (Hua Yuchun) is taken away by the Eldest Sister. Lian Lanyan encounters the Ten Villains when he passes through Villains' Valley. He is overwhelmed by them and knocked out in a fight. The baby Xiaolu'er is taken away by the Villains, who surprisingly do not harm her, and instead intend to groom her to become the greatest villain ever. Eighteen years later, the twins meet each other by coincidence.

The plot has to do with a reign of terror conducted by a mysterious killer dubbed "Poison Dart," who is hitting all kinds of prominent people with poison darts.

Respected veteran Yueh Feng made this “Martial Arts World” saga of a masked master of the “Black Sand Hand Technique,” while Lily Ho, the star of "Princess Iron Fan" and "Angel With The Iron Fists", excels in a delightful dual leading role. When she teams up with Shu Pei-pei as a fellow swordswoman to vanquish a murdering robber, the comparisons to "Crouching Tiger, Hidden Dragon" are obvious, even though it came three decades later.

The 5 Kao brothers, separated since childhood, are unaware that the master Teng Lung Manor, Lung Chen-feng has killed their father. All five, however, seek to defeat the vicious gangsters at the Manor.

Bai Yu Lung's father mysteriously disappears one night, and for 10 years Bai searches for him in vain. Finally, he decides to head to the far northern part of the country with the hope that he can find a clue in that region. There, he falls in love with a beggar (Cheng Pei-pei) and they continue the search together.

Ivy Ling Po plays the dedicated wife of a man being blackmailed for an illicit love affair, who uncovers a pit of deceit, double-crosses, extortion and murder after murder.