Tatsuya is a veterinarian. He quits work at an animal hospital and he is supposed to work for Veterinarian Tokumaru at an animal hospital in Kagurazaka, Tokyo where he was born and grew up. Suddenly, Tokumaru entrusts the animal hospital to Tatsuya and disappears. Tatsuya is confused, but he treats the animals with a warm heart and interacts with the animal owners.