Unwanted and unloved, Pollyanna Whittier comes to her aunt's home without a warm welcome. Pollyanna's irrepressible spirits make punishments seem like treats and her cheerfulness brings happiness to her aunt and other members of the community.

Cheerful Vee-Dubb decides to find out why grumbly old Humbugg refuses to come to his holiday party -- Snugg, who is small even for a Bugg, is afraid of the dark until he learns to make friends with the creatures of the night.