So's Your Aunt Emma

Emma Bates is an old spinster living with her equally unmarried sisters. One day she decides to go to New York City to see a fight where a young man Mickey O'Banion is one of the boxers. Emma's sisters are appalled by this decision, unaware that Mickey is the son of a man Emma was once involved with years ago. Emma and Terry concoct a plan to rescue Mickey from his captors. Emma is to pose as Ma Parker and infiltrate the gang, claiming she knows how to find Rex Crenshaw.