Synopsis: The owner of a hospital (Maureen O'Sullivan), who finds herself in a delicate financial situation, is forced to depend on the money of a millionaire patient (Margaret Dumont) or give the business to an ambitious tycoon. That's when the Marx Brothers enter the scene. Groucho is a veterinarian, but he pretends to be a doctor to keep the rich hypochondriac in the hospital. Since this is not enough, they decide to bet on their horse to get the necessary money.