Heroes of Sung stars one of the original kung-fu ladies of the silver screen Shih Szu playing swordswoman Meng Hung who must work with Fan Tien-fu, played by perennial Shaws bad guy Lo Lieh (although he's good in this) to find then protect the royal seals of the Sung Dynasty. If they should fail, the dynasty will fall. Shih's magnificent performance earned her the female hero role in the Shaws-Hammer Studio hit "Dracula" and the 7 Golden Vampires.

Siu Lao (Lieh) and Ma Tien Piao (Feng) are bandits who ride from town to town holding up banks and killing anyone who tries to stop them using their superb and rapid fire shooting skills. When a holdup goes wrong, Siu sends Ma away with the cash and tells him that if he is caught to try and rescue him later. Siu is tortured and as time passes he realizes his sworn brother isn't coming for him instead setting up a bandit gang to carry on with murdering and banditry. Sui manages to escape and heads for Ma's encampment to settle some scores.