At N-mura General Hospital works veteran nurse Chiaki, a caregiver with over twenty years of experience who commands immense trust and affection from her patients. Particularly among middle-aged and elderly male patients, she is adored like a saintly mother figure. Yet behind her compassionate facade lies a surprising secret. Elderly patients who enter the hospital demoralized and devoid of hope for life are revitalized within mere hours. The reason lies in why Chiaki is secretly known throughout the hospital as the "Sex Mother." Her special sexual services heal both the minds and bodies of her patients, restoring their lost vitality and passion for life.