Sarah leads two lives. By day, she is the perfect lady, training for married life, and blossoming into a high-society lady. By night, she is a member of the Wednesday League, a secret club that helps defenseless women and children. One night, she slips out the window dressed as a man and hurries through London's foggy back streets in order to help a child. But the charming yet dangerous Ethan Travis, blocks her way. He asks what such a beautiful woman is doing out in the middle of the night and attempts to proposition her. Has he mistaken her for a prostitute?