The arrival of the ambitious Lucia in the quiet, status-obsessed village of Tilling triggers an immediate and escalating social war with the reigning queen bee, Miss Mapp. Lucia, a woman of refined tastes and social maneuvering, seeks to establish her dominance over the local social hierarchy, directly challenging Mapp's long-held authority. The narrative follows their elaborate schemes, petty rivalries, and constant attempts to outdo one another through social events and local influence. The world is defined by the rigid, claustrophobic social codes of early 20th-century English village life, where a misplaced invitation or a slighted ego constitutes a major crisis. The story is presented through a third-person omniscient perspective that highlights the absurdity of the characters' priorities.

Readers frequently highlight the sharp wit and observational humor that define the rivalry between the two protagonists. Discussion often centers on the effectiveness of the satire in exposing the triviality of social climbing within a confined community. Critics note the consistent pacing and the author's ability to maintain tension through low-stakes conflicts. The atmosphere is often described as lighthearted yet biting, appealing to those who enjoy character-driven social comedies. Many readers appreciate the timeless nature of the petty power struggles depicted throughout the narrative.