Hugo is a boy who loves eating and sleeping and hates exercise. Because he is lazy, his room is always messy, and he does not even care about his hygiene. He takes a bath only when he is forced to, and he never brushes his teeth. One day, two tooth worms named George and Arthur find a way to his teeth and choose one to live in. Soon, a few homeless tooth worms show up, asking George and Arthur to let them live there. Arthur and George happily agree and ... This book makes children familiar with the negative effects of laziness and emphasizes the importance of dental hygiene.