Centring on the legend of the four ancient Chinese heroines, the film was a novelty for audiences at the time, as the singing performance was in Cantonese and used huangmei operatic rhythms—a popular trend in the 1960s, yet it retained traditional flavours by using operatic luogu percussion in the battle scenes.
Humanity finds a mysterious object buried beneath the lunar surface and sets off to find its origins with the help of HAL 9000, the world's most advanced super computer.
"In my film I suggest that there is no greater mystery than that of the protagonists. War and Love are simply equated for what they are; the aftermath is inevitable, and a normal human condition, for which like the ancients one can only have pity and understanding.