A girl who joined a "black company" spends her days arriving early in the morning and returning home on the last train. One day, she crossed the line with a senior colleague who was considered a troublemaker by the company. However, the senior was transferred to a regional office, leaving her frustrated and overwhelmed by work... Eventually, she became such an extreme corporate slave that she just started living at the office. She bought a tent, and prepared a sleeping bag and blankets. With work stress and a lack of sex, her libido built up so much that she decided anyone's cock would do, making early morning sex with a junior colleague her new routine. Then, one year later, her senior returned to the office, and they were reunited...