In the office of the Pingkang County Procuratorate, a report on the Hou Guiping case lay quietly on the table.Since there was no new evidence to support the case, the procuratorate decided not to open the case.However, Prosecutor General Ding has deep doubts about the case and personally supports Jiang Yang to continue the in-depth investigation.At the same time, Yan Liang visited Li Jing again and heard this long-lasting past event from her mouth.

Ten years ago, Hou Guiping, a young man full of passion and ideals, came to Miaogao Township to teach.At that time, he was not only Li Jing's boyfriend, but also a good teacher and good friend in the eyes of the children.Hou Guiping's arrival brought knowledge and hope to this remote village.

However, one evening, Hou Guiping witnessed a shocking incident.Weng Meixiang, a female worker in a local factory, was forcibly taken away by the gangster Yue Jun.The next day, Weng Meixiang was found in the women's restroom. She had taken dichlorvos and was dying.Despite emergency rescue, Weng Meixiang failed to survive in the end, and her death cast a shadow on this small village.

Hou Guiping read Weng Meixiang's diary while grieving.From this, he discovered that the truth behind suicide was not as simple as it seemed.In order to uncover the truth, Hou Guiping decided to call the police to the Pingkang County Public Security Bureau.However, this move attracted Yue Jun's revenge.

One day, when Hou Guiping was making out with Li Jing, Yue Jun suddenly broke in and learned about Hou Guiping's call to the police.In anger, he had a fierce fight with Hou Guiping.The fight attracted many villagers to watch, and the scene was very chaotic.In the end, Hou Guiping had to choose to continue investigating the case privately.

On the calendar, Hou Guiping circled the date October 25th.What secret lies behind this date?Why is Hou Guiping fascinated by himself in the mirror?The moment he left the dormitory, where did he go?

With Yan Liang's in-depth questioning of Li Jing, these mysteries gradually surfaced.During the investigation, Hou Guiping discovered many unknown secrets, which were closely related to the cause of Weng Meixiang's death.Due to various reasons, these clues were not accepted by the prosecutor's office.