Leo McCarey

When the tiny nation of Freedonia goes bankrupt, its wealthy benefactor, Mrs. Teasdale (Margaret Dumont), insists that the wacky Rufus T. Firefly (Groucho Marx) become the country's president. Sensing a weakness in leadership, the bordering nation of Sylvania sends in the spies Pinky (Harpo Marx) and Chicolini (Chico Marx) to set the stage for a revolution. As Firefly clashes with the Sylvanian ambassador (Louis Calhern), plenty of mayhem ensues, and the countries verge on all-out war.

Jerry (Cary Grant) and Lucy (Irene Dunne) are a married couple who doubt each other's fidelity: Jerry suspects Lucy and her music teacher (Alexander D'Arcy) of spending an evening together, and Lucy is convinced Jerry lied about a business trip. When the jealous pair file for divorce, both rush into new relationships, but quickly realize their love never died. The soon-to-be-divorced husband and wife then both scramble to spoil each other's chances for newfound romance.