Summer is set in early 20th-century America and follows Charity Royall, a young woman living in the isolated village of North Dormer. Discontented with her stagnant life and troubled origins, she yearns for freedom and vibrancy. The novel opens with rich summer imagery, highlighting her inner restlessness. The arrival of Lucius Harney, a stranger to the town, sparks emotional change and introspection in Charity. This encounter sets the stage for her journey through desire, identity, and awakening.