Zoe Fleefenbacher has one blue eye and one green eye and bright red hair that goes on...forever. Her hair has always been unruly, but now she is in first grade and according to her teacher, Ms. Trisk, "first grade has rules." It takes countless barrettes and scrunchies to finally hold Zoe's hair. But when it can help with an uncooperative science lesson, will Ms. Trisk let Zoe's hair free?