Treetures are creatures of an enchanted forest called Nutley Grove. These creatures, described in the beginning of the book, all work together to prepare the forest for the coming season changes from summer to autumn, and then to winter. In this story the Treetures are known as Mudsters, and they live in a big oak tree performing each of their duties as they prepare for the coming Winter Feast. The Young Sproutlings, Chip, Petals and Pod, are the first to notice the change in the leaves around the Great Oak and their questions can only be answered by the Sunbeam Team, Chlorophyll and Chlorophyllis. The Sunbeam Team is on the way to a sunnier vacation spot, and taking the color from the leaves with them. Spring, a Treedom Fighter, encourages the Sproutlings to find Autumn, the Leaf Turner. Wanting to help with the responsibilities, the young Sproutlings make their way to Mama Greenleaf who is busy making a blanket of fallen leaves to cover the forest floor. As the Sproutlings proceed, they find Rootie and Roothie, the Rooters who are preparing the roots for the coming temperature changes by covering the roots with leaves and twigs. Stomper, the Compost Master, is busy making mulch to feed the trees in the spring. As the Sproutlings continue their journey, they meet with the Sap Tappers, Woody and Phloemina, hard at work protecting the vessels within the Great Oak. The Sap Tappers explain to the Sproutlings the vessels in the tree provide the food and water in the spring. When Autumn the Leaf Turner arrives, a fun time is had by all at a Fall Fair with rides such as a Leaf-Go-Round, Canopy Coaster, Bark Climbing, Root Scooter, and a March Mulch.