In Jiang Yang's originally peaceful life, classmate Li Jing's sudden visit dropped a stone and caused ripples.Li Jing's ex-boyfriend, Hou Guiping, had a shocking incident of raping a woman and committing suicide by diving into the water in fear of crime two years ago.However, there are many doubts hidden behind this seemingly simple case.

The cause of Hou Guiping's death has always been a mystery lingering in people's minds.There was only 150ml of water in the stomach of the deceased, which is far from the usual characteristics of drowning by falling into water.This discovery aroused great vigilance in the young prosecutor Jiang Yang.With Wu Aike's firm support, Jiang Yang decided to investigate the matter in depth and vowed to uncover the truth.

Jiang Yang's investigation at the Pingkang County Public Security Bureau was not smooth.Captain Li Jianguo used his tough attitude to threaten Jiang Yang, trying to prevent him from going deeper.But Jiang Yang did not back down. He found Chen Mingzhang, the forensic doctor on the case, and obtained Hou Guiping's autopsy report from him.This report gave Jiang Yang a glimpse into the even more shocking secrets behind the case.

At the same time, Zhang Xiaoqian also received the second photo from the mysterious person.The content in the photo seems to be inextricably linked to the case. It is the night view of “Lijing Hotel”.Zhang Xiaoqian immediately handed the photos to the task force.After analysis, the police found that the photos were taken secretly at night, and the clue of “Lijing Hotel” may become the key to solving the case.

In order to find out the truth, the police sent people to retrieve three anonymous letters.Only the fingerprints of female reporter Zhang Xiaoqian and her colleagues were left on the envelope.Through the postmark check, the police found that the letters were sent from a mailbox in an alley, but unfortunately, there was no surveillance video in this area for inquiry.

Captain Ren Yueting led his men and decided to wait near the mailbox, hoping to find something.However, what was unexpected was that that night they accidentally discovered that another force was also secretly investigating the case and was also searching for the person who sent the anonymous letter.