When he was 4 years old, Moegi Masayuki was traumatized by a large dog. Ever since then, he has had a fear of large dogs and a dislike for any dogs. At his sisters insistence, he has to take in her dog to obedience training. There he meets Kurosawa Kanata, a police dog trainer. Soon Masayuki forgets his fear of dogs, blinded by his curiosity...