As compensation for a traffic accident caused by her son, a mother agrees to participate in an incestuous encounter that will be filmed. Director Takesuki Takashi initiates the project, capturing the forbidden relationship between mother and son. The mother, who raised her son alone, gives in to her son's request—embraced and kissed by him inside their home. Though she resists as he fondles her body, a large wet spot forms on her underwear. Eventually, she begins to lick her son's cock and takes him inside her vagina, moaning like a woman in heat, losing control completely. She cries out that her son's dick feels incredible, that it's the best she's ever had. Afterward, she is also taken by Director Takesuki, who played the role of the accident victim, writhing in ecstasy as she reaches climax.