A professional prizefighter finds his rigid social standing challenged when he falls for a woman from the upper class. Cashel Byron, a man of limited education but immense physical prowess, navigates the complex social hierarchies of Victorian England while concealing his true occupation. His objective is to reconcile his brutal career in the ring with his growing affection for Lydia Carew, a wealthy and intellectual heiress. Opposing him are the rigid class expectations of the era and the inherent contradictions between his public persona and his private desires. The narrative is presented through a third-person perspective that emphasizes the social friction between the working-class athlete and the aristocratic elite.

Readers and critics often note the work as an early example of Shaw's penchant for social satire and his ability to dismantle romantic tropes. Discussion frequently centers on the unconventional pairing of the protagonist and the heroine, which serves as a vehicle for examining the rigid boundaries of the British class system. Many observers highlight the balance between the gritty reality of the boxing world and the refined atmosphere of the drawing room. The narrative is recognized for its wit and its refusal to adhere to the sentimental standards of its time, providing a sharp look at the intersection of merit and social status.