After hiring a magical nanny, her previous employer comes looking for her with a vengeance and zaps Darrin into a mirror.

Samantha needs help painting her house, and Aunt Clara conjures up the most famous painter of all time, Leonardo da Vinci. Da Vinci is mad when he learns that his famous Mona Lisa painting will be used in Darrin's campaign to sell toothpaste. Samantha then gets him to create another best-selling idea.