Joy is an emotionally damaged young woman of eighteen, who was given up at birth, to grow up in homes and with foster families. She lives on the fringes of society, getting by on benefits and earning a little extra by playing the accordion in the subway. In addition, she is a skilled shoplifter and has never been caught. The film follows her closely during her dogged search for her unknown biological mother. Joy has a rather distant quality and the only times we see her animated is during her obsessive attempts to discover the identity and address of her mother. She clings to her conviction that she was the product of a loving relationship and that is why her mother called her Joy. This belief is all she has to hang onto in life.