Hatred of the English who killed her family pushes the Scottish countess, the beautiful Katherine McGregor, onto a dangerous path. She decides to pose as a prostitute in order to steal documents from an English officer. But the risky plan failed - the girl was arrested and the young Viscount Holystone was assigned to escort her to Lancaster. Now Catherine's life depends on whether she can play her role well. But could she have imagined that mad love for her jailer would confuse all her cards!