The synopsis goes something like this ...
Sealey's little Richie Bridgestone (whose parents are divorced) goes to spend the weekend with his father, Robert (Mathews) at his secluded mountain cabin, and there witnesses dear old dad being attacked by 'a creature' that the boy recognizes as a werewolf. He spends the rest of the film trying to convince his mother, Sandy (Elaine Devry), and his therapist, Dr. Marderosian (George Gaynes) that his father has really bad breath, is in need of a good shave, and keeps trying to eat him.