Robin saves a beautiful young woman, Gwynedd, disguised as a nun, on the road to the town of Royston. She has been searching for him to enlist his help in saving her sister, Bernadette, who is to be hanged if she does not allow herself to be married against her wishes to Drugo, the henchman of the evil Baron Royston. Together they plan to defeat the evil villains who run the town. Meanwhile, Little John's sister Ingrid wants to go to Royston to try to find herself a husband, but Little John thinks it is too dangerous and locks her up to prevent her going. Of course, this doesn't stop her for long, and she ends up in Royston in the middle of the raid to rescue Gwynedd.