When Ari's beloved plushie, Robin, is scooped by an eagle while he's playing a game, he, Olive, Elinor, and Dr. June Groundhog follow the purloined toy to the eagle's aerie. They observe and learn about seasonal changes in the mountain environment, while Ari learns the value of using his imagination.

The kids need to come up with a craft for the nature craft show and get inspired by mud.