Jenny is carrying the child of a young man who dies in the San Francisco earthquake (1906). After giving birth, she decides to place her child in the custody of a wealthy married couple. Years later, thanks to the protection of a corrupt politician, she becomes the main "madame" of San Francisco, in addition to participating in various illegal activities.
A stenographer who works for a lawyer falls in love with and marries a wealthy young man. His family has the marraige annulled, after which she gives birth to a child. Her former boss helps her out to ensure the child's welfare, which starts gossip that she is a "kept woman."
Aviator Jim Blaine and his brother Neil are rivals not only as daredevil flyers, but also for the love of parachutist Jill Collins.
