Zhuang Jinghe, the police chief, has mixed feelings, waiting for the news that his daughter Zhuang Fluttershy, who has been studying in Britain for two years, and her daughter have been married privately in Britain. Son-in-law is Song Peiwen, the son of Song Bonian. The banker's father and daughter quarreled about it, and Fluttershy ran away from home and was held hostage by a drug dealer who fled face to face. In the process of rescuing the hostages, Jiang Yucheng, the captain of the Criminal Investigation Brigade, Ling, a gangster from the slum, and Song Wuping, the adopted son of the Song family, saved Fluttershy.
The hostage incident made Zhuang Jinghe's attitude loose, and then he talked to Song Bainian about marriage. That night, Zhuang Jinghe was shot in the study, and Fluttershy was also stunned. When he woke up, he was accused of killing his father with a gun. There were many twists and turns in the trial. First of all, Ling was threatened by a mysterious person to testify against Fluttershy in court. Later, unscrupulous lawyer Tang Jusheng tricked Fluttershy into confessing, and Fluttershy was sentenced to death. Just before the execution, Jiang Yucheng accidentally discovered that Fluttershy was pregnant, rushed to the execution ground at gunpoint to save Fluttershy, and promised to fully reverse his conviction.
Fluttershy was sentenced to life imprisonment, and the Song family disowned her. After Fluttershy went to prison, he survived the early dark prison life and won the respect of all his inmates with his kindness and wisdom. Ling perjured herself and hurt others. She couldn't bear the condemnation of her conscience and decided to atone for herself. Dressed as a prison guard, he entered the women's prison and helped Xiao Dad avoid several assassinations. Xiao Die, persuaded by Jiang Yucheng and Jiang Yucheng's sister Chengdu, formed a temporary alliance with Ling to jointly resist the unidentified killer hiding in prison. Xiao Dad and Ling died several times, so they became real friends. Ling, like Jiang Yucheng, fell in love with this rose that survived the storm, but he knew that Butterfly fell in love with Jiang Yucheng and hid his feelings. He didn't know that Chengdu also fell in love with himself quietly.
The secret investigation outside Jiang Yucheng's prison is getting better and better. The biggest suspect is Song Bonian. Song Bonian was killed because Zhuang Jinghe had mastered the evidence of his drug trafficking and went after Xiao Dad regardless of his feelings. However, during the investigation, Song Bainian's daughter, Song Wanchi, fell in love with Jiang Yucheng, who had the purpose of making friends with him.
Just as Fluttershy was looking forward to a new life after he was released from prison. Song Wuping bribed the jailer and set the prison on fire. In order to save other female prisoners from serious injuries and miscarriages, Fluttershy climbed back to earth with her last breath. Fluttershy lost the last hope, carefully planned and successfully escaped from prison with the help of female prisoner Xiang Jie and others.
After Xiao Dad escaped from prison, she and Ling avoided the police and stalkers while looking for evidence to excuse themselves. In the tangle of jurisprudence and emotion, Jiang Yucheng finally decided to give up arresting Xiao Die, and secretly cooperated with Xiao Die and Ling to arrest Tang Jusheng, a lawyer who tricked Xiao Die into confessing by incomplete legal means. Song Bonian and his son imprisoned Tang Jusheng's family, and Fluttershy forgot to make friends and spared no effort to help Tang Jusheng save his family. Tang Jusheng was moved by it, testified in court and told the truth. Xiao finally got revenge for his death. Song Bonian, on the other hand, put all the charges on the scapegoat and withdrew from the court.
Fluttershy could not accept the result that Song Bainian was at large. Thinking of the unfairness of fate to him, Xiao Dad vowed to let the Song family and his son get the punishment they deserved. It's not hard to let Song Bonian die. Destroying his drug trafficking network is the biggest punishment. Fluttershy sold the banker's ancestral home, gathered financial resources and opened a restaurant called Lingyunzhuang. Based on this, she used her gang identity and Ling's personal connections to attract some businessmen with gang background who can only hang out in slums for many years, and set up a chamber of commerce, aiming at expanding her power and cracking down on the drug business in Song Bonian. Fluttershy became a man of the hour.
Jiang Yucheng was dissatisfied with Fluttershy's close relationship with gang members, and there was a rift between them. On the other hand, Ling fell in love with Xiao Dad, which turned the sad Chengdu into the arms of Song Wuping. Song Wuping "defected" to Xiao to die for Chengdu, testifying that Song Bonian fell into the French Open. Before Song Bonian committed suicide in despair, he left a letter to Xiao Die, telling him that it was Song Wuping who killed Zhuang Jinghe, and that he was the real murderer who killed Xiao Die's father. Moreover, Song Wuping was not satisfied with drug trafficking, and established a drug-making stronghold, which was even more harmful.
In order to get back at Song Bonian, Fluttershy tried her best. She sacrificed her innocent friends and was disheartened. Jiang Yucheng believes that he has become a tool for evil forces to compete for interests and is no longer qualified to safeguard justice and fairness. He resigned and wanted to take his sister Chengdu away from Shanggu. But Chengdu was pregnant with Song Wuping's flesh and blood, and Jiang Yucheng left alone. Fluttershy found Jiang Yucheng and asked him to forgive him and help him stand up again, but Jiang Yucheng resisted Fluttershy.
The Chamber of Commerce was leaderless and fell into chaos, and Song Wuping took advantage of it, causing the Chamber of Commerce to fall into a crisis of dissolution. Not only that, Song Wuping occupied the business of the Song family, expanded the drug-making and drug-trafficking network under it, and also instigated Song Peiwen to take drugs, using Song Peiwen to control his later pool in the "closest relatives" for many years.