A singing contest on the first night made the education bureau chief Wang Hualiang get up late, and thousands of students stood under the scorching sun waiting for him, many of whom suffered from heatstroke. A young child, Lu Yunxiang, died as a result, and the kindergarten director, Cheng Yan, buried the body privately. After parents called the police, Cheng Yan was pressured to reveal the location of the buried body. However, the police found two corpses in a pit. After investigation, the second body was Chen Hai, a worker of the black bean sprout workshop.
Meanwhile, more than a hundred pneumoconiosis workers have been running for their rights and interests, and the coal boss sends someone to beat them up. One of the workers, Xu Hu, is killed, but there is no evidence that the coal bosses did it.
The police investigated deeply and found that Chen Hai and Xu Hu had "held the body for ransom" seven years ago, and Bai Shi Bing, who was their accomplice, was suspected of committing the crime. When the police are ready to close the net, white stone ice but ran away.
The train was involved in a rear-end collision, and the police saw Bai Shi Bing's figure on a news picture, but the railroad police said that Bai Shi Bing didn't take the train at all.
At this time, a "John Doe" who has lost his memory for seven years wakes up and speaks a few words, making the police suspect that the murderer is someone else.
At this time, the Shanghai subway rear-end accident, in a reporter on the news, the police found clues, and the day of a picture of the driver groping his breasts, the police immediately made it clear.
