Two young men, Arthur Gilroy and Lowell Rightmeyer, are on their way to rob the bank in Pixley. They change their plans when they learn that the next day, the Cannonball, without any armed guards, will make its run from Hooterville to Pixley for the bank shipment. Arthur and Lowell decide to stay the night at the Shady Rest. Kate and the family are happy to have two polite and handsome young men stay with them. Arthur and Lowell do hold up the train the next day. But, Kate and Uncle Joe are also on the train and they recognize the masked bandits. When Arthur and Lowell learn that the bank shipment is only deposit slips, they decide to rob the Shady Rest instead. But will Kate, her family, Charley and Floyd be able to turn around Arthur and Lowell's criminal lives?

Business is bad at the Shady Rest and Kate needs to make a $200 bank loan payment. Uncle Joe meets Henrietta Boswell and Gertrude Hawley, who are lost and looking for Madame Bovary's Hideaway Reducing Farm. He convinces them that the Shady Rest is the most exclusive reducing farm and charges them $200 for a week. The catch is that Uncle Joe provides them with a money back guarantee. Uncle Joe tries to hide from Kate why the women are staying at the hotel. With a rigged scale, Joe has to convince the two that the secret to weight loss is to eat whatever they want as long as it is combined with turnip greens. He also has them do what would normally be considered all his chores. Ultimately, the two women do whatever they can to find what they believe is Kate's miracle weight loss and youth secret.