In May 1827, the Pickwick Club of London, headed by Samuel Pickwick, decides to establish a traveling society in which four members journey about England and make reports on their travels. The four members are Mr. Pickwick, a kindly retired businessman and philosopher whose thoughts never rise above the commonplace; Tracy Tupman, a ladies' man who never makes a conquest; Augustus Snodgrass, a poet who never writes a poem; and Nathaniel Winkle, a sportsman of tremendous ineptitude.
The Pickwickians meet to begin their first journey and get knocked about by an angry cabman, who thinks they are informers, while an angry crowd gathers. They are rescued by Alfred Jingle, who travels with them to Rochester. Jingle is an adventurer interested in wealthy women, and on this first trip he involves the innocent Winkle in a duel with Dr. Slammer, a hot-tempered army man.
At Chatham, the Pickwickians watch army maneuvers, get buffeted about, and meet Mr. Wardle, a country squire who invites them to his estate at Dingley Dell. After some mishaps with horses, Mr. Pickwick and his friends arrive at Mr. Wardle's Manor Farm, where they enjoy card games, flirting, storytelling, hunting, and a cricket match. Mr. Tupman falls in love with Mr. Wardle's spinster sister, Rachael; and Mr. Snodgrass falls in love with his daughter, Emily. However, Tupman is outsmarted by the vivacious, unscrupulous Jingle, who elopes with Rachael. Mr. Pickwick and Mr. Wardle pursue Jingle and Rachael to London, where, with the help of a lawyer, Mr. Perker, they buy off Jingle and save Rachael Wardle from an unhappy marriage.