Even though Henry is looking forward to going to kindergarten, he is not sure about staying once he first gets there.

To celebrate the one hundredth day of kindergarten, each student brings in an example of the number 100 for show-and-tell, including a 100-year-old relative, and Ms. Bradley shares the jar of 100 jelly beans that have marked the days.

Henry the mouse likes everything about first grade except reading, but with some extra help at school and home, he is delightfully surprised.

When Henry's imagination gets mixed up with the truth during show and tell, his teacher suggests that he write and illustrate his own stories.

When a new second grader begins bullying Henry and the other first graders, Henry stumbles onto a secret that just might save them.