Calvin sits at school with a smile on his face. He thinks it's exciting to get a secret message in the mail. He wonders if the message will arrive in the mail today. Miss Wormwood is trying to tell him something, but he sits with his smile. As Miss Wormwood continues talking to him without Calvin hearing, he wonders who sent it and why was it sent in code. Calvin sits in the principal's office with a smile on his face. He thinks he's growing up to be a spy, since he's so good at figuring out what's going on.