Jeannette Vaubernier, an impulsive shopgirl en route to deliver a hat, dreams of luxury and position as she saunters through the woods, and attracted by a pool of water, she disrobes and plunges in. Cosse de Brissac, a handsome private in the King's Guards, comes to her rescue and they become sweethearts. Meanwhile, Jean Du Barry, a shrewd roué, takes note of her at the millinery shop and tricks her into staying at La Gourda's, where she soon becomes a favorite among the men.
A distinguished English gentleman has a secret life--he is the notorious jewel thief the press has dubbed "The Amateur Cracksman". When he meets a woman and falls in love he decides to "retire" from that life, but an old friend comes to him with a predicament that entails him committing one last job.