Tarrou and Rambert visit one of the isolation camps, where they meet Othon. When Othon's period of quarantine ends, he chooses to stay in the camp as a volunteer because this will make him feel less separated from his dead son. Tarrou tells Rieux the story of his life and, to take their mind off the epidemic, the two men go swimming together in the sea. Grand catches the plague and instructs Rieux to burn all his papers. However, Grand makes an unexpected recovery, and deaths from the plague start to decline.