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.
Two young boys, play hooky from school in order to explore an ultramodern world's fair. They take in the many marvelous scientific and industrial exhibits, obtain literature, eat food, and generally run amok.
Five criminals are arrested after a bank-robbery. One escapes, and the police officer in charge of transporting them arrests a new person at random to cover up for his negligence.