Gerri O'Toole is a wood nymph, who are mortal enemies of witches. Gerry has come to carry out a curse her people placed on Darrin's ancestor, Darrin The Bold, and all of his descendants for murdering her beloved Rufus The Red. Samantha figures the only way to lift the curse is to go back to the time to the 15th Century and stop Darrin The Bold from slaying Rufus The Red.