The story takes place in a Californian community known as Poker Flat, near the town of La Porte. Poker Flat is, in the opinions of many, on a downward slope. The town has lost thousands of dollars, and has experienced a moral decline. In an effort to save what is left of the town and reestablish it as a "virtuous" place, a secret society is created to decide whom to exile and whom to kill. On November 23 of 1850, four "immoral" individuals are exiled from Poker Flat and warned not to return on pain of death. The first of them is a professional poker player, John Oakhurst. He is among those sent away because of his great success in winning from those on the secret committee. On his way out of town, he is joined by two women, the Duchess and Mother Shipton, and Uncle Billy, the town drunk and a suspected robber. These four set out for the Sandy Bar mining camp, a day's journey away over a mountain range. At noon, the group stops for a rest over Oakhurst's protests.