San Francisco in the 1950s, a turning point in American culture: the rise of rock and roll and the teenage lifestyle. Jim Briskin is a disc jockey on radio KOIF. He’s still in love with his ex-wife, Pat—even though she’s about to marry someone else at the station—and she’s vacillating between them. But when he takes her to visit the desperate household of two of his teenage fans, she seduces the boy into abandoning his pregnant wife—who then claims Jim as her protector and support.