Things at Daisy P. Flugelhorn Elementary School have been quiet—too quiet. Cuddly yet calculating class hamster GW spends his days in second grade and his nights poetry slamming and jigsaw puzzling with his friends, Sunflower and Barry. GW has even started warming up to the second-grade students. Could he be making human friends? When the school art show is announced, GW learns of a dastardly plot—Harriet and her many minions are planning to ruin it! Once again, it's up to GW, Sunflower, and Barry to stop to Harriet's mousey madness.