While Ms. Shelby-Ortiz if recovering from an injury, substitute Mr. Willow takes over NIkki and Deja's third-grade class with disastrous results. A few of the class troublemakers plot to take advantage of the clueless young teacher, and soon other students join in. Should Nikki and Deja go along with the rest of the kids in tormenting him? Should they help him out by tattling on their classmates .... or is there another way to handle the situation? And when will their beloved Ms. Shelby-Ortiz ever return?