A warlock who has come to 'save' Sam from her mortal marriage turns himself into an unusual dog that helps Darrin with an account.

Endora wonders why Samantha can't be more like Serena, spontaneous, free willing and loose. Endora puts a spell on Sam that makes her do exactly what Serena does. This causes problems for Darrin, especially when he has to deal with a all business type client.