The young and handsome Duke of Barenlock is 27 and is being constantly pestered by his mother and his family to get married. They are not only frightened he will not produce an heir to the dukedom, but the castle, one of the most famous in Scotland, is in desperate need of repair. The duke’s cousin Moira introduces him to an attractive American girl, Mary-Lee, who is an immensely rich heiress. Moira tries to pressure him into proposing to Mary-Lee, but he is idealistic enough to hope that one day he will fall in love with someone who will love him not for his title but for himself. To escape the pressure he goes for a walk by his river, which he shares with his clan's arch-enemies, the MacFallins. There he meets Sheinna, the daughter of the chieftain of the MacFallins.