Miyu Samura's life hits rock bottom after his breakup with Yuuko, but things take an unexpected turn when she returns with a toy poodle she can't care for. Miyu, with no knowledge of dogs, struggles to manage the puppy, which jeopardizes his living situation. A chance encounter with professional dog trainer Shinichirou Niwa leads Miyu to seek advice on caring for his pet and eventually prompts him to quit his job to become Niwa's assistant.