Mei is a full-time housewife. Depending solely on her husband's income would make life very difficult, so Mei took a part-time job at a gyudon restaurant chain. There she met Tanaka, a kind and honest college student working extra to cover living expenses. Mei's husband always works late into the night, and the two of them have not spoken directly for a long time. In contrast, Mei and Tanaka are getting closer, and they enjoy each other's company. One day, Tanaka invited Mei for a drink, and she opened up to him about her family. Tanaka listened attentively and touched Mei deeply. Suddenly, she invited Tanaka to a hotel, and although he was surprised, he didn't refuse. And their relationship officially began from that moment. They even had sex right in the restaurant. However, because the restaurant had surveillance cameras, they both got fired. Tanaka will look for a new part-time job, and he will try to earn as much money as possible because now it's not just about himself; Tanaka will need to take care of Mei and her unborn child...