When Nibbles the guinea pig and his friend Posie find caterpillars munching on their prize-winning dandelion plants, they decide to make the caterpillars their pets.
Every guinea pig in Dandeville loves to eat dandelion leaves until there is only one plant left, and Nibbles secretly and carefully tends this treasure until he can share the seeds with his community.
Upset when the arrival of a new pet, a baby chameleon, seems to displace his role in the family, Dudley the dog finds a way to prove himself indispensable.