At first the Sycamores seem mad, but it is not long before you realize that if they are mad, then the rest of the world is madder. In contrast to these delightful people are the unhappy Kirbys. Tony, the attractive young son of the Kirbys, falls in love with Alice Sycamore and brings his parents to dine at the Sycamore house on the wrong evening. The shock sustained by Mr. and Mrs. Kirby, who are invited to eat cheap food, shows Alice that marriage with Tony is out of the question. The Sycamores find it hard to understand Alice's view. Tony knows the Sycamores live the right way with love and care for each other, while his own family is the one that's crazy. In the end, Mr. Kirby is converted to the happy madness of the Sycamores after he happens in during a visit by the ex-Grand Duchess of Russia, Olga Katrina, who is currently earning her living as a waitress.