Grandpa returns back to grade school so he can finally fulfill his dream of graduating./Mr. Simmons gives the class an assignment to couple up and take care of an egg over the weekend to learn teamwork and responsibility.
Back to School: After Arnold finds out that Grandpa never graduated grade school, Phil goes back to school to get his diploma. Egg Story: Arnold and Helga get teamed up in Mr. Simmons' class project to take care of an egg for a weekend. Helga tries to show her nice side, but Arnold, assuming that she's going to start picking on him, lays down the law before she gets a chance.