A cop chases two hippies suspected of a series of Manson family-like murders; unbeknown to him, the real culprits are the living dead, brought to life with a thirst for human flesh after government officials conduct pest control experiments using subsonic waves in the area.

Rusty Parker, a red-headed leggy dancer at Danny McGuire’s Night Club in Brooklyn, wants to be a successful Broadway star. She enters a contest to be a ‘Cover Girl’ as a stepping-stone in her career. She reminds the publisher, John Coudair, of his lost love, showgirl Maribelle Hicks. He was engaged to Maribelle, although his wealthy society mother made fun of her. Maribelle left John at the altar when she saw the piano at her wedding. It reminded her of the piano-player she truly loved. Rusty is Maribelle’s granddaughter and there are musical sequences with Maribelle dancing to songs from the beginning of the 20th century.