Viscount Robert Winthrop returns home to his family manor and discovers that his estranged sister, Hannah, is nothing but a foundling left on their doorstep years ago. He wants to toss her out, but is attracted to the spirited beauty Hannah has become in his absence.
Hannah doesn't know what to make of her feelings for the man she once called brother. She issues Robert an ultimatum — he must unravel the mystery of her true parentage before she'll agree to marry him. Can he uncover her scandalous secret before it's too late?