It's finally the first day of fourth grade and Arthur couldn't be more excited -until he learns Buster is in another class. Meanwhile, D.W. is nervous for her first day of kindergarten. Will Arthur and D.W. be able to make new friends?
Mr. Ratburn is getting married! Arthur can't believe it. Teachers don't have lives outside of school...do they? And Arthur and Buster get into an argument over a video game and pretty soon the entire third grade class chooses sides.
"Muffy's House Guests": Muffy is terrified when peregrine falcons build a nest outside her bedroom window. "Binky Can't Always Get What He Wants": Binky must choose between starring in a television commercial or performing in a talent show.
Francine rallies the troops around a petition to help Lakewood Elementary protect the environment. Binky is convinced Mr. Ratburn's math test was too hard, so Brain suggests he conduct a poll to find out what the rest of the class thinks.
