Andre (Maurice Chevalier) and Colette (Jeanette MacDonald) have been married for three years when temptation pays a visit. Colette's schoolmate, Mitzi (Genevieve Tobin), stops by and takes a liking to Andre. While Mitzi's advances toward Andre intensify, Colette is being romantically pursued by Andre's good friend Adolph (Charles Ruggles). Colette, oblivious to Mitzi's intentions, assumes her husband's infidelities are focused elsewhere. Similarly, Andre doesn't suspect his pal's advances.