In contrast to the delightful Sycamore family, the Kirby family is very unhappy. 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 why she is embarrassed of her family. Tony knows the Sycamores live a more healthy way with love and care for each other, while his own family is the one that's needs to change. In the end, Mr. Kirby is converted to the happy madness of the Sycamores particularly since he happens in during a visit by the ex-Grand Duchess of Russia, Olga Katrina, who is currently earning her living as a waitress.