Three friends and their dog embark on a chaotic boating excursion up the River Thames, only to find that their lack of preparation and penchant for procrastination turn a simple holiday into a series of comedic mishaps. The narrative follows the trio as they attempt to navigate the river, constantly hindered by their own incompetence, bad weather, and the unpredictable behavior of their dog, Montmorency. Told through a first-person perspective, the story serves as a satirical look at the Victorian obsession with leisure and the romanticized notion of river travel. The physical constraints of the boat and the unpredictable English weather serve as the primary obstacles to their comfort and progress.

Readers frequently highlight the enduring wit and observational humor that has kept this work popular for over a century. Discussion often centers on the balance between the lighthearted, slapstick nature of the boating accidents and the author's dry, ironic commentary on human nature. Critics often point to the effectiveness of the character dynamics, particularly the contrast between the narrator's self-importance and the reality of their situation. The atmosphere is consistently described as charming and quintessentially English, making it a staple for those interested in classic comedic literature. Many readers appreciate how the narrative manages to remain amusing despite the simplicity of its premise.