Anne Carr and Helen Todd move into the Sans Souci apartment house complex in California, which is restricted to unmarried people under 30 years of age. Mr. Parker, the social director, introduces them to their fellow residents, and soon both girls are being pursued by the men. Helen, an intellectual, is attracted to Gerald Pryor, a married man who has sneaked into the complex; while Anne is fending off many aggressive young men. Two tenants, Jim Allen and Bob Merrick, bet playboy Bret Hendley that he cannot seduce Anne within a week. He takes the wager in order to win enough money to complete his college education. After a few encounters, Bret becomes serious about Anne and rebuffs her rather than use her. Anne hears about the wager and, wanting Bret to win it for the sake of his educational expenses, pretends to have been seduced--and Jim and Bob pay. Mr. Parker, upon discovering that Anne and Bret plan to marry, gives them a party and then ousts them from the apartments. Less happily, Helen also has left the Sans Souci; after learning of Pryor's marriage, she has attempted suicide but instead has been raped by a group of waterfront thugs. She recovers and emerges as a sadder but much wiser young woman. Additional songs: "Symbol of Love," "Tight Black Gown," "The Loner."