What is the plot analysis of "Masked Hotel"?

The plot analysis of "Masked Hotel" is:

In the second case, the husband who killed his wife to defraud the insurance money was arrested; in the third case, the deceased's student asked Surrender to police.

The fourth note pointed to the location of the first case, a cycle that also heralded the solving of all cases. Nitta resumed his police uniform, and what he missed in his heart was not only the waiter's uniform, but also Shang Mei, who often stood by his side to support him.

Movie review:

As a criminal policeman tracking criminals in the film, Nitta will have a harsh attitude towards the residents, while Yamagishi has the greatest trust and tolerance for the residents. Personal beliefs are like magnets that repel each other, and tensions often arise.

However, due to a certain opportunity, the two gradually changed their views on the problem. In order to do their best work, they both began to trust each other in their hearts. In the process, the film throws the theme of "what professionals should do right" to the audience to think about.