The bond between an elderly couple and their grandson takes a drastic turn as they begin craving the youth's vitality, relentlessly tormenting his body. Using a double-headed dildo, the grandmother violates the grandson, breaking the once pure relationship and plunging into taboo grandmother-grandson incest. Stripped of all morality, the aging couple—drawing near life's end—clings to twisted desires, believing their sexually transmitted diseases might miraculously heal through these acts. Their inappropriate contact with the grandson awakens a disturbing longing for a great-grandchild, exposing their complete loss of reason and descent into depravity.