Holding a grudge against Robert Torrens and his wife, who live in Italy, a member of the Mafia kidnaps their infant daughter Lois. Fifteen years later, after having been raised by Italian peasants, Lois, now called Peppina, dresses as a boy and stows away on a ship to America in order to avoid a marriage to a particularly loathsome count. While aboard ship she befriends Hugh Carroll, an assistant district attorney, who arranges first-class transportation for the "boy." In New York, she once agai...