With her husband out of town, maki is always busy with housework and child-rearing. Today, after finishing her part-time job just in time, she receives an invitation from her student colleague, Rin, for a drink. Feeling a long-lost thrill from his sincerity, she accepts a time-limited affair. From that day forward, they repeatedly engage in intense intercourse during brief moments between work and breaks. Maki's body, always hot and wet during work hours, is fiercely desired within the limited time.
