Housewife Nozomi discovers her son hiding a pornographic magazine one day. Witnessing the scene firsthand ignites a long-dormant desire within her, stirring emotions she had long suppressed due to years of sexless marriage. Touched by her son's arousal, she begins guiding him through masturbation, only to find herself awakening to new pleasures. As their bond deepens under the guise of sex education, mother and son cross boundaries, forging an intimate connection that redefines their relationship in the most forbidden way.