An office worker facing an important presentation, a father exhausted from childcare, an illustrator struggling with an inferiority complex... At the mysterious clinic "Nakagyo Kokoro Clinic," patients with various troubles are prescribed real cats instead of medicine.

While being swept along by the adorable "prescription cats" and the smooth-talking Dr Nikké, the patients gradually heal their emotional wounds. In the midst of all this, the "patient with a reservation" whom Dr Nikké and the others have been waiting for finally arrives at the clinic—the third volume of the highly popular series!