Today is a very unusual day! Caroline wakes up late, forgets her socks, and feels strange all the way to school. She tries to help her teacher, but everything is mixed up today and all Caroline manages to do is make a great big mess. Finally, the school day ends and Caroline rushes outside to greet her parents, who are having a rather extraordinary day themselves. In their arms they hold Caroline’s new baby sister, who has just arrived from far away.