The beautiful debutante Lady Valeria Netherton, at her grandmother's suggestion, left England to visit her redoubtable cousin, the Duc de Laparde. The spirited young beauty feared no matchmaking: She would never marry an aristocratic Roue who would surely pursue his affaires de coeur as energetically after marriage as before.

Valeria's impetuous half-brother persuades her to impersonate a woman of dubious repute in Biarritz, so that he can enjoy seeing the cancan in a den of iniquity. In doing so, Valeria becomes involved in a dangerous escapade in which she loses her heart to the fascinating Comte de Savin. But Valeria may miss her first chance at true love, because she met the man of her dreams when she was disguised as a wanton woman lounging.