The novel takes the form of a series of letters written by various characters, including Matthew Bramble, his sister Tabitha, his nephew Jery, his niece Lydia, and his servant Humphry Clinker. Each character provides their own perspective on the events and encounters they experience during the journey, offering a rich and diverse narrative.The plot of "The Expedition of Humphry Clinker" revolves around the interactions and misadventures of the traveling party as they encounter different social classes, regions, and eccentric characters along the way. The novel touches upon various themes such as social criticism, satire, and observations of British society in the 18th century.One of the central characters, Humphry Clinker, is a servant who becomes an essential part of the Bramble family. His observations and insights provide a unique perspective on the social dynamics and disparities prevalent in British society during that time.Smollett uses humor, wit, and satire to explore the foibles and idiosyncrasies of his characters and the society they navigate. He also addresses topics such as class divisions, politics, and the role of women in society. Through the letters exchanged among the characters, Smollett offers social commentary and criticism of the contemporary British society.