Set in 1920s Chicago and based on real-life murders and trials, Chicago follows Roxie Hart, a wannabe vaudevillian star who murders her lover and is arrested, despite her attempts to convince her pushover husband, Amos, to lie for her. In the Cook County Jail, Roxie meets her hero, the famed double-murderess and nightclub performer Velma Kelly. When both acquire the same superstar lawyer, Billy Flynn, tensions come to a head as they vie for the spotlight.