A Touch of Sin

San'er travels on a motorbike across rural Shanxi. He is accosted by three thugs who attempt to rob him. Unfazed, San'er pulls out a pistol and kills them all.

Dahai is the de facto workers' representative at a privatized coal mine. Angered that the village remains poor while local officials grow rich through alleged lying, bribery, and embezzlement of funds from the mine's operation, Dahai confronts the village chief, who dismisses his grievances. He goes about the village making his intentions to report the officials to the Central Committee in Beijing known, and is alternatingly met with quiet support, indifference, and annoyance.

Dahai's crusade comes to a head when he confronts the Jiaos, the owners of the mine, in front of the villagers. His demands are ignored and he is attacked by one of the Jiaos' hired thugs, making him the subject of ridicule. He is then visited by the Jiaos' representatives in the hospital, who compensate him with hush money.

Dahai visits his sister in a nearby town, reaffirming his vengeance against the officials. He retrieves a shotgun from his house and goes to the village accountant, attempting to extract a written confession regarding the chief's misdeeds. When the accountant calls him a coward, Dahai shoots him and his wife. Dahai continues his rampage, shooting a lackey who ridiculed him, the village chief, a man mistreating his horse, and finally Mr. Jiao himself. Covered in blood, Dahai smiles as patrol cars approach the village.

This segment is based on the Hu Wenhai incident, which took place in 2001.[4][5]

San'er returns to Chongqing for Chinese New Year celebrations and to celebrate his mother's 70th birthday. His estranged wife rejects his mysterious monetary contributions to the family. On New Year's Eve, San'er bonds with his son by firing off his pistol during a fireworks show.

Following the New Year celebrations, San'er buys bus tickets for three cities seemingly at random, avoiding his wife's questions. The source of San'er's income is revealed when he heads into town and methodically guns down a woman and her husband before snatching her handbag. He then leaves Chongqing.

San'er's story is loosely based on that of Zhou Kehua, a gunman who committed several murders and robberies between 2004 and 2012.[4][5]

Xiaoyu meets with her lover Youliang, a married man, in Yichang, and gives him an ultimatum to divorce his wife within six months. Youliang heads to Guangdong and Xiaoyu heads to her job as a receptionist at a spa. There, she is assaulted by Youliang's wife and her hired thugs, and flees to a van offering a fortune-telling service.

Xiaoyu hitches a ride with some construction workers to see her mother. On her way back, she witnesses corrupt local officials ordering thugs to beat up a worker who refuses to pay an arbitrarily set-up toll. That night, as she leaves her shift, Xiaoyu encounters the same officials, who harass and assault her when she refuses to give in to their demands for sex. She snaps and kills one of the officials with a fruit knife left behind by Youliang. Leaving her workplace in shock, she calls emergency services and confesses to the murder.

This segment is based on the Deng Yujiao incident which took place in 2009.[4][5]

Xiaohui (Luo Lanshan), a Hunan native working at a textile factory, accidentally causes a workplace injury. Unwilling to work while his wages are transferred to the injured party as compensation, he flees employment and heads to Dongguan, where he finds work at a hostess club. There, he strikes a chord with Lianrong (Li Meng), a hostess and another Hunan native.

Over time, Xiaohui and Lianrong grow close but Lianrong rejects Xiaohui's romantic advances and his proposal that they leave Dongguan. She reveals that she has a daughter and is only doing sex work in order to provide for her. Xiaohui witnesses Lianrong performing sexual services on a client one night and quits.

Xiaohui takes on a job he earlier rejected for unfavorable benefits. Penniless until his next payday, he receives a call from his mother, who berates him for not sending money home. He is then caught by Chang Ling, the injured party from the textile factory. Chang and his gang prepare to beat Xiaohui up for escaping work, but relent and leave. Humiliated, Xiaohui commits suicide by jumping out of his company apartment unit.

This segment is based on the spate of worker suicides in locations and facilities owned by Foxconn between 2010 and 2013.[4][5]

Back in Shanxi, Xiaoyu attends an interview at a factory now under the management of Mrs. Jiao. She chances across a public opera performance, where an opera actor asks, "Do you understand your sin?", ostensibly to the crowd.