The arrival of a rare white monkey figurine serves as a catalyst for the mounting domestic and financial anxieties of the younger generation of the Forsyte family. Fleur Mont, struggling with the constraints of her marriage and the shifting social landscape of post-World War I London, finds herself caught between her own desires and the rigid expectations of her social class. As her husband Michael faces professional instability and the family wealth becomes increasingly precarious, the narrative tracks the friction between traditional values and the emerging modern ethos. The story unfolds through a third-person perspective that emphasizes the psychological interiority of the characters as they navigate their changing environment.

Readers and critics often note the precise, observational style Galsworthy employs to dissect the social mores of the early twentieth century. Discussion frequently centers on the contrast between the older, established Forsyte generation and the restless, uncertain younger members. Many highlight the effectiveness of the author's atmospheric rendering of a society in transition following the Great War. The pacing is generally described as deliberate, prioritizing character development and social commentary over rapid plot progression. This work is recognized for its contribution to the broader Forsyte saga, providing a nuanced look at the decline of Victorian sensibilities.