A medieval legend about an evil curse, a love triangle and a dreadful tragedy. Harald and Alfred are love rivals for the hand of the beautiful Ysault. While Ysault favours the noble Harald, she does not know that Harald is under a terrible curse, inherited from his wicked grandfather.

The region is being ravaged by a vicious werewolf which carries off livestock and children, but mysteriously only on nights when Harald is away from the castle. Alfred notices this strange coincidence and determines to take advantage of the insight to beat his love rival.