Professor Fritz Mrs. Jenkins' students are making science projects to display at Hilltop School's open house and Fritz, the class inventor, is going to impress everyone with his rocket ship. When a test flight goes haywire in front of the entire class, Fritz feels humiliated and abandons his experiment. Timothy and Charles inadvertently suggest something that changes everything. Two Tutu Friends Doris is inspired to take ballet lessons after watching Grace dance in front of the class. A growing friendship between the two girls comes to an abrupt end when Grace calls Doris a ""blabbermouth"" and Doris calls Grace a ""cry baby"". Both girls discover that dance class isn't as much fun without each others' friendship.