Francesco is a woman with no relatives who lives a solitary life after having grown up in a convent. One day while inspecting her genital area with a hand mirror, she notices a “growth with a human face”. The face, which she names “Mr. Koga”, is verbally abusive and proceeds to berate her with insults like “You’re hopeless as a woman!” on a daily basis. The strange symbiosis between Francesco and Mr. Koga causes her to question the true nature of love and sex.