Harry is a happy mouse because he helps others. On his walk, he helps a frog. The frog asks how he can repay him, and Harry tells him to help someone else. The frog does and helping others moves through the ones who have helped another. Seeing how it worked through others makes Harry happy.
I liked this story. I liked how Harry and each one after him helped someone else. I liked how they felt after helping. It makes a circle and Harry's wife shows him how his helping one animal then moved through the other animals. This story was fun. It rhymes. Your toddlers will enjoy the story and the illustrations. I look forward to more of Harry.