Beth is a downtrodden woman, persecuted by both her bed-ridden mother and her callous employer. She finds her only comfort in the voice of radio doctor Lindsey Roland. As she grows more depressed, she fantasizes about having conversations with Dr Roland. She finally plucks up the courage to call into the radio show, and becomes convinced that the doctor is now her best friend. Before long, Beth's obsession begins to have dark and violent consequences.