Sixteen years after Ruby Claire's gangster boyfriend was shot and killed by four associates, a series of gruesome murders takes place at the drive-in movie theatre she now owns. Meanwhile, the behaviour of her mute daughter Leslie is becoming increasingly strange and a visiting psychic claims that forces from beyond are out for revenge.

In 1935, Ruby Claire was pregnant when she saw her boyfriend brutally murdered by gangsters, and soon after, had her baby. Now Ruby's daughter is sixteen and has never spoken one word. Ruby owns a drive-in theater, and when her employees begin mysteriously disappearing, it seems possible that her silent daughter might be involved.