A young, spoiled and unloved girl is sent to live with her reclusive uncle in a large, lonely house after the death of her parents. Through the discovery and cultivation of a hidden, neglected garden, she befriends a local boy and her sickly cousin, and the three children find healing and transformation through their friendship and the magic of the garden.

Set in 1953, during the coronation of Queen Elizabeth II, the novel explores the life of a highly intelligent young woman, Frederica Potter, who aspires to attend the University of Cambridge. The narrative follows her struggles with the societal norms of post-war England, her family's expectations, and her own intellectual and emotional growth. Interwoven with Frederica's story is a parallel narrative about a theatrical production celebrating the coronation, which serves as a metaphor for the cultural and social changes occurring in England at the time.