Lady of the Night ~ the story of two baby girls, born near in proximity, but worlds apart in life, - Molly Helmer, the daughter of a thief, and Florence Banning the daughter of the judge who would send Molly's father to prison. The girls' lives come together as young women at eighteen as Florence leaves the security of the exclusive Girls Select School, and Molly, now orphaned, begins her life free from reform school. Norma Shearer plays both young women, but the apparent differences in their worldliness will also make them most unfamiliar in appearance. Molly's new world consists of nights at Kelly's Dance Hall and her ever-present worshiper, Chunky Dunn. On one of her nightly dance hall outing's Molly meets David Page, an up and coming inventor, whom she quickly falls in love with. Molly persuades David to seek an honest buyer for his new safe-cracking device; against the advice of Chunky whose shadier side see's this as an opportunity for himself...