In early 1930s Montana, in the small town of Colton, Maddy Aldridge struggles to make ends meet during the Great Depression. With her mother long dead, her stubborn younger sister fighting her at every turn, and her father's arthritis deteriorating so badly that she has to run the family store alone, her desperation grows by the day. Enter Jeffers Grimm with a proposition too great for her to turn down: open an illegal speakeasy in the mercantile's basement, defy Prohibition, and make enough money to make her worries disappear.