Julia, a married woman who recently returned to work after a long absence, decides to go out drinking with her supportive young colleague, Nakano, to deepen their friendship. As they become more comfortable together, Nakano confesses his feelings unexpectedly. Despite initially rejecting him due to their age difference, she eventually gives in to his passionate advances and experiences a long-awaited creampie sex session. Their bodies mesh perfectly, and they can't get enough of each other both at work and at home. They become so entangled that nobody can stop them anymore.

久々の職場復帰でサポートをしてくれる若手社員・中野と親睦を深めるために飲みに行くことになった人妻・JULIA。酔った中野を介抱しながら家に送ると、思いがけず告白をされる。「私なんかよりもっと若い子がいるでしょ…」一度は拒むが、熱い想いに傾きそのまま久しぶりの中出しSEX…成熟した身体を若い性欲は想像以上の高相性。それから2人は社内でも家でも濃密な性交と青春のような日々にハマり、もう誰も止められない。