Q-SKY is the #1 radio station in Los Angeles mainly because of the music they play and the fact that they run the station the way they want to. It has led them to a ratings success. The interesting radio personalities include: Jeff Dugan, rebellious head of the radio station; Mother, the burned out DJ; Eric Swan, a self-centered romantic who wants more than just being a DJ; The Prince of Darkness, the hip night DJ; and Laura Coe, the easy-going type. The movie focuses on the battle between Jeff and his corporate bosses, who want more advertising and less music. Directed by John A. Alonzo and starring Michael Brandon, Eileen Brennan, Alex Karras, Cleavon Little, Martin Mull, and Cassie Yates, FM features appearances by Tom Petty, Jimmy Buffet, REO Speedwagon, and extensive concert footage of Linda Ronstadt.