Young Plum is one of the peacock ambassadors for the Athensville Zoo. Every day the peacocks are allowed to wander freely among the zoo's visitors, delighting and guiding kids and grown-ups alike. The peacocks are very proud of their responsibility; none so much as kind, curious Plum. But Itch the ningbing, a type of very small marsupial, doesn't understand why those birdbrains should get so much freedom while he's all cooped up. So he plots and plots, sure that he will escape and become the zoo ambassador!