"From the outside, Harold is an average seven-year-old third grader growing up in the 1960s. Bored by school. Crushing on a girl. Likes movies and baseball. Enjoys spending time with his grandfather. But inside Harold's mind, things are a lot more unusual. His thoughts come to him as birds flying through a small rectangle in the middle of his brain. He visit an outdoor cafe on the moon and is invited aboard a spaceship by famed astronomer Carl Sagan....

Fly my kite: When Dirty Dan tries to take away Grandma's retirement fortune, it's the kids and Pete the Pup to the rescue. Honkey donkey: Spoiled rich kid Wally invites the gang and their pet mule to his mansion. Beginner's luck: Spanky's reciting Shakespeare in a talent show but he can't seem to get his lines out. Reunion in rhythm: The grammar school is putting on a musical with all your favorite songs and stars. Hook and ladder: No sooner does...

Hubie's dog, Tailspin, has always been a loyal companion. But how did they first meet? When Hubie's mom finally says that he can get a puppy, Hubie has some big decisions to make. There are so many different kinds of dogs to choose from! Luckily, Tailspin, makes the choice easy.

On the third day of school, a young boy is sent to the principal's office and thinks about all the horrifying rumors he has heard about her.

Summer is coming to an end and Hubie has to get ready for a new school year, but his new clothes are wrong, he gets shots from the doctor, and he hears rumors of a new teacher even scarier than the others.