In the movie "Big Bad Mama", Wilma McClatchie is the main character played by actress Angie Dickinson. Wilma is a single mother struggling to make ends meet during the Great Depression in the 1930s. She turns to a life of crime, robbing banks and becoming a notorious gangster along with her two daughters, Polly and Billy Jean. Wilma is a tough, no-nonsense woman who is not afraid to use her sexuality and intelligence to get what she wants. She is fiercely protective of her family and will do whatever it takes to provide for them. Throughout the film, Wilma battles against rival gangs and law enforcement while navigating the complexities of motherhood and romantic relationships.