In the cheerful Parisian demimonde, a true comedy of errors happened. On the surface there is a very ordinary story: a frivolous count falls in love with the young kept woman of a visiting rake-viscount. There is only one “but” - the count is in fact not a count at all, but the English Duke of Faverstone, who is related to the British royal house. And the Viscount and the kept woman are in reality just brother and sister, Kendrick and Tina, the prince and princess of the small principality of Wiedenstein, who fled from their harsh parents. Moreover, Tina’s father and mother chose the Duke of Faverstone as her husband.