Twenty years ago, Dashan and Yoyo, who was the girlfriend of his brother Dajiang, had smoked dope on the verandah. Dajiang was so angry that he beat Yoyo up. She fell off the building, and the scene was witnessed by an ugly girl named Xiaoxian.

Alvin visits Ziwen by posing as his classmate and tries in vain to find out why he tried to kill himself. Dashan gets close to Ziwen and his mother, and learns that before Ziwen attempted suicide, he had received a call from James.

Sixteen-year-old Zhang Simin is accused of murdering her father, Zhang Shouzhong, by leaving the gas turned on at home. Dashan accepts the case. He learns Shouzhong had a violent streak and his family suffered for years. Simin turns out to be Xiaoxian’s step-sister. Xiaoxian holds herself responsible, as she did not help Simin escape their father’s clutches.

Unable to bear the sight of her mother being arrested, Simin is inconsolable. Qiangwei reveals she has only six months to live because of cancer, and hopes Simin will take care of Si’an. Xiaoxian and Simin object to Kaili’s method of defending Qiangwei and want Dashan to defend her instead. Dashan himself is disappointed with Kaili, and decides to represent Qiangwei in court. However, he doubts she is the real culprit.

Fifteen-year-old Liu Anqi, who has the IQ of a five-year-old, is accused of theft. Dashan and social worker Meiyue almost knock into the drunk Liu Feifei, while taking Anqi home. Feifei is Anqi’s mother. Yoyo is rushed to hospital with an acute lung infection. Dashan remembers how Dajiang had regretted letting Yoyo take drugs, which caused her to be in a coma. Qiangwei is happy Simin can continue with her studies in prison.

Dashan is injured after being pushed by Feifei. He and Anqi are taken to hospital. Dashan is reminded of how Dajiang had committed suicide in prison. Old Bao verifies that Feifei is not Guoqiang’s mistress, as all she does when they meet is to take money. Dashan tells Xiaoxian he is sensitive about drug issues, as drugs had caused his brother’s death and also Yoyo to be in a coma. He lost his cool when he saw Feifei giving Anqi drugs.

Fifteen-year-old Kiki Luo Peiling borrows her tuition teacher’s house to hold a birthday party. She is raped by a masked man, and pictures of her in the nude are uploaded onto the Net. Tutor Deng Yongjun is charged with rape. Yongjun is Old Bao’s cousin. He asks Dashan for help and claims he did not rape Kiki. Keke got drunk after she was rejected by the guy she liked. Yongjun consoled Kiki and got drunk too.

Alvin yells at Dashan and declares he will no longer regard him as his big brother. Dashan explains that the culprit could be someone else. Everyone criticises Dashan for defending an unscrupulous teacher. Xiaoxian overhears Dashan joking about plastic surgery and loses her courage; she does not reveal the truth. Dashan urges Kiki to remove her mean online posts.

Wang Baihe, Jingang and Chaoren rob a taxi driver, Liang Youcai. Youcai loses control of his vehicle and kills a passerby, Paul Feng. Dashan accepts the case. He goes to see Baihe, who is in her seventh month of pregnancy. She complains that he is the only person who has visited her in six months. Dashan posts bail for Baihe, so that her baby will not have to be delivered in prison.

Chen Guo is sure Dashan will want to investigate the case himself. Baihe wants to move back to the social welfare home, as her stepfather has peeped at her in the bathroom and molested her. Dashan urges her to bear with the situation, so as to gain sympathy from the judge during the hearing. Old Bao learns Youcai has been complaining that his wife is unfaithful. Baihe tries to pay Youcai a visit.

Dashan is given an award by the Law Society for his pro bono work. He thanks Chen Guo for his help and moves everyone with a video on Alvin and Yahui’s cases. Alvin wants Xiaoxian to remove his chest tattoos. He has decided to take up a baking course and hopes to become a pastry chef and run a shop with Yahui. Alvin, Yahui, Melvin, Kiki and the others are having a barbecue by the beach when Guan Xianyu and his gang turn up to create trouble.

Dashan awakes with a start and realises he had dreamed about Alvin’s body being found. He receives a call from Xiayi and rushes to the beach, but Alvin is nowhere to be found. Xiayi returns home and continues to feed Alvin with medicine to keep him in a daze. He claims Dashan is a bad person and he will protect Alvin. Kaili shows Dashan a stack of photographs of Xiaoxian’s supposed affair with Peter.

Dashan has flashbacks of the past and realises it was he who pushed Yoyo off, not Dajiang. Alvin feels bad when he learns Dashan sustained brain injuries and is in a coma. He blames himself. Chen Guo believes Dashan will come round soon and help Alvin fight the case. Dashan comes round and reveals it was he who pushed Yoyo off the building and that there was another girl there that day.