In this charming children's story, Henry's cousin Annie comes to visit, and she is quite different from Henry and his playful dog, Mudge. Annie is very neat and cautious, which initially makes Henry worry that she won't enjoy her stay. However, as the visit progresses, Annie begins to open up and embrace the fun and messiness that come with playing with Mudge. Through their adventures, Annie learns to appreciate the joys of being a little less careful, and the trio forms a delightful bond, highlighting themes of friendship, acceptance, and the joy of embracing differences.
