There's a very special 150-year-old oak tree outside the window of Bea's classroom at Emily Dickinson Elementary School. When Bert, Bea's nemesis, climbs the tree, he gets in a lot of trouble—and that leads to even more trouble for everyone. "Concerned" citizens proclaim the tree a hazard and call for cutting it down. But the class won't let that happen, and using Bea's artistic ability, they work out a great plan to save the tree named Emily. Bea and her classmates know they can save their school's best tree from being cut down!