Stella Wells, fledgling scientist, has a new baby brother, Drake, and she is seriously considering the possibility that he is a duck--but further research is required to test that hypothesis.
When the dog he is caring for runs away from Alan into the forbidden garden of a retired dog-hating magician, a spell seems to be cast over the contrary dog.
Pleased with his success in riding a bike, Duck decides to drive the farm tractor, and invites all the other farm animals along for the ride--all the way to town.