Sam searches through all of his toys but can't find anything good enough to take to school for show and tell until his troublesome little brother appears.
A boy unhappily prepares for a show-and-tell presentation about his grandfather, Frank, who seems to be boring and grumpy, but he is in for a few surprises when the big day arrives.
Second grader Woody is having trouble with Miss Plunkett, the new student teacher who doesn't like his show-and-tell, and with Ethan, the kid who lives across the street.
When Matthew has nothing for show-and-tell one day, he tells the class that he has a lion living at his house, but when his classmates want to come see it he must decide what to do.
Jake is so excited about his 100th Day of School, he runs to catch the school bus without his project, but fortunately, with the help of his principal, Jake is able to find a perfect substitute for his project.