A young financing lecturer from Yokohama Branch suddenly disappeared. This incident attracted great attention from the head office.

As experienced auditors, Soma (played by Takaya Kamikawa) and Xiao Wu (played by Xing) were urgently dispatched to the Yokohama branch to investigate the matter.

After arriving at the Yokohama branch, they quickly met with the Nakamura branch manager (played by Keiko Toda).

The Nakamura branch manager described to them various bad behaviors of the missing class members, and his words were full of dissatisfaction and disappointment.However, as the investigation deepened, Xiangma and Xiaowu discovered that the facts were not as stated by the Nakamura branch manager.

By reviewing information, talking to colleagues and visiting on-site, they gradually restored the real life and work status of the missing teachers.

Although this young instructor is somewhat negligent at work, he is generally a conscientious, responsible and proactive employee.

He did not have the bad behavior described by the Nakamura Branch Manager, but was deeply loved and respected by his colleagues.

This discovery shocked Xiangma and Xiaowu, and they realized that there might be a bigger secret behind the disappearance.

So, they began to investigate the Nakamura branch manager, trying to uncover the truth of the incident.