Meet Hattie Harmony, the best Worry Detective in town! Whenever her friends are feeling nervous, Hattie is always there to help them figure out exactly what they need. The first day of school can bring up a whole lot of jitters for everyone. From speaking in front of the class to riding the big yellow bus for the very first time, there are plenty of reasons to feel butterflies in your stomach. Hattie knows all the perfect tools to help calm her friends' bodies and minds. But what happens when Hattie's own fears start to bubble up? Can the Worry Detective learn how to overcome her own anxiety? This warm, funny, and beautifully illustrated story is packed with helpful ways to handle big feelings. It is the perfect companion for anyone who needs a gentle reminder that it is okay to feel worried, and that you have the power to calm your mind.