Yui, who was worried about not being able to have children, learns of the existence of a doctor who can definitely make a patient pregnant. However, the doctor's treatment is to lick the patient's face with his tongue to understand the patient's condition, and then to increase his own arousal and ejaculate thick semen into the patient's vagina, making the patient pregnant! Yui, who has unwittingly gotten her crotch wet, is confused but ends up having sex with the doctor...