The novel focuses on the life and exploits of Fevvers, a woman who is – or so she would have people believe – a Cockney virgin, hatched from an egg laid by unknown parents and ready to develop fully fledged wings. At the time of the story, she has become a celebrated aerialiste, and she captivates the young journalist Jack Walser, who runs away with the circus and falls into a world that his journalistic exploits had not prepared him to encounter.

Nights at the Circus incorporates multiple categories of fiction, including postmodernism, magical realism, or postfeminism. As in her previous works, Angela Carter plays with many literary aspects and dissects the traditional fairy tale structure.