Jim Cartwright's play concerns a painfully shy, diminutive woman named Little Voice who lives in the north of England with her overbearing mother, Mari, and who she listens to her late father's records and creates faultless impersonations of the world's greatest divas, including Judy Garland and Shirley Bassey. When Mari's latest boyfriend overhears Little Voice's singing, he puts in place a tragic sequence of events.