Deemed nouveau riche and shunned by elitist New York society, sisters Nan and Virginia St. George, along with their friends Lizzy Elmsworth and Conchita Closson, try their luck in London. The girls' New World spontaneity and impertinence constitute nothing less than a social invasion of Old World society and they soon find themselves courted by a coterie of fascinated admirers. But as the old and new worlds come to clash, something has to give.