Go on a cross country adventure with Cher in her first dramatic film, Chastity! Chastity (Cher) is a lonely young girl who is hitchhiking across the country in hopes of finding someone to love her and make her forget her disturbed past. She does find love with a man who she calls Andre (Stephen Whittaker). Chastity feels that the relationship is getting too serious so she decides to run. She goes to Mexico where she starts working at a whorehouse, there she befriends the strange lesbian owner (Barbara London). Chastity is looking for a mother figure in the woman, but the woman has different feelings for Chastity. She soon realizes that this is not the life for her and decides to return to Andre and try to start a new normal life. Things are good, but not for long as Chastity's dark disturbed past will never let her feel loved by anyone.

Unhappy with her life but unable or unwilling to confront the reasons for her unhappiness, a young woman who calls herself Chastity hitchhikes through the Southwest. Determined to live up to the name she has chosen for herself, she cruelly rebuffs a friendly truckdriver and then accepts a ride from Eddie, a young law student. Though he gives her a bed for the night and makes no physical demands upon her, Chastity runs away from him, takes $5 from a gas station, steals a car, and eventually hitches a ride to Mexico. Following an encounter with a cab driver who is a procurer, she visits a bordello owned by Diana Midnight and cheats a gullible young man out of his money by getting him to pay for an evening of "sexual entertainment" which never progresses beyond washing his hair. Despite the use of Diana's beach house, Chastity once more takes to the road when she discovers that her patroness is a lesbian. Returning to Eddie in the middle of the night, she spends some time with him but leaves abruptly the next morning. Chastity recalls her past and the trauma of her early home life, with its incestuous overtones. Racing to the highway, she stands there with tears streaming down her face as another truck driver pulls over to offer her a ride.