It is the end of WW II and the household of Mrs. North, a well-to-do widow with a country cottage, is very busy. War circumstances brought both of her daughters home: loud but good-hearted tomboy, Violet, and highly-strung and over sensitive Heather with her two small children. Mrs. North is also taking care of her young niece, Evelyn, a lively child who loves to play on the local farm and has a great passion for animals. But at the center of all this is Oliver, Mrs. North's only son who lost his leg during the war service abroad.

Recovering from his injuries, bed-ridden Oliver has nothing better to do but observe the busy lives of the people around him. Treated as a hero and a confidant by all the women in his family, Oliver begins to enjoy his new role as a self-proclaimed counselor. Due to his advice, Violet, an independent spinster, unexpectedly accepts the marriage proposal from a local farmer. Her wedding is a success and Violet finds a new happiness in her marriage, but soon Oliver's meddling in his family affairs goes too far. Will his risky instructions save or ruin Heather's marriage, which is at the brink of crisis, when her husband comes back from Australia after a few years of separation? Will Oliver learn to accept his new circumstances? Will he finally face to the reality and start to rebuild his own life?

In this compendium plot, Monica Dickens, with her typical attention to detail, humor and talent for creating vivid characters, explores complicated life stories of the close-knit family and their friends at the end of the war. The Happy Prisoner was first published in 1946.