Judy Standish (Maureen O'Sullivan) owns the failing Standish Sanitarium. Her rich most important patient Mrs. Upjohn (Margaret Dumont) is leaving. Judy's boyfriend Gil Stewart (Allan Jones) spends all his money to buy a horse and win big for her. She is dismayed that he abandons his singing. Tony (Chico Marx) overhears Upjohn's praise for Dr. Hackenbush (Groucho Marx) and sends for him who turns out to be a veterinarian. Banker J.D. Morgan (Douglas Dumbrille) is trying to buy out the sanitarium with the help of the scheming manager Whitmore (Leonard Ceeley). Gil gets Stuffy (Harpo Marx) to ride his horse Hi-Hat.
Groucho is as snappy as ever. Harpo's physical gags are hilarious. There are some fun long setups like the ice cream bit. When all three get together in the examination, it's a great skit. As always in their movies, there are old fashion musical numbers. Those are not my taste but it's expected. I personally like the musical segments where they inject comedy into them. There is even one with a big cast of black singers and dancers. There are some big laughs although the movie is a bit long.