Tomorrow Will Be Better tells the story of Margy Shannon, a shy but joyfully optimistic young woman just out of school who lives with her parents and witnesses how a lifetime of hard work, poverty, and pain has worn them down. Her mother's resentment toward being a housewife and her father's inability to express his emotions result in a tense home life where Margy has no voice. Unable to speak up against her overbearing mother, Margy takes refuge in her dreams of a better life.