The year is 1667, and King Charles II reigns in England. An actress named Catherine finds that her brother is set to be executed for high treason, and her only hope of saving him is to accept a shocking role. She is to play the wife of man named Tom Trenchard and carry out a mission of espionage with him. She'll have to set sail with this brutish stranger who reminds her of a pirate while they pretend to be an adoring couple. But she begins to let her guard down when she sees how reliable he is. Perhaps by the time it's all over, her love won't be an act...