The eccentric uncle intends to bequeath his entire fortune to his three nephews if they marry fallen women. The first to take on the case is the frivolous Jasper Sullivan, Earl of Blackwater. Moreover, he has already found a suitable bride. However, Jasper has no idea what he has gotten himself into. The “harlot” he intends to save is in fact an innocent girl, Clarissa Astley, who disguised herself as a moth to find her younger brother, who had mysteriously disappeared in the back streets of London. Why is she in no hurry to admit her masquerade to the count and continues the dangerous game? Is it because she fell in love with an irresistible handsome man at first sight and dreams of becoming his wife.