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 personal 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 prepare to hold a great feast on Hugo’s tooth to mark the occasion. This book makes children familiar with the negative effects of laziness and emphasizes the importance of dental hygiene.