In the play, Zhang Lixun (Ng Cheuk Hai) is a uniformed patrol policeman, and his mother Xian Huiying (Shang Tiane) is an inspector of the Criminal Investigation Team. While investigating a murder case, Huiying and his colleague and friend Wu () were ordered to guard the scene, while the murderer ran away wildly. Li Xun shot to stop the murderer from hurting passers-by, but because of his mistake, he couldn't stop the murderer successfully. The murderer drove reluctantly and ran into a high-powered vehicle, resulting in injury and hospitalization. ...
The accident didn't affect Li Xun's career. Five years later, Li Xun was transferred to the Major Crimes Unit, and Cheng Yi was also transferred to the Criminal Investigation Team led by Huiying. The three of them work in the same police station and have a good relationship. However, Huiying and Chengyi didn't know that the accident had left a shadow on Li Xun, and they didn't expect a robbery to make Li Xun and Walker meet again. ...
Tan Meizhen (Tian Ruini) works as a salesgirl in a handbag shop and soon becomes lovers with Ada (Yang Ming). Mei Zhen knew that Ada was not a legal family, but she was satisfied with the material and protection given by the other party. Even though Ye Xinying (Yao Jiani), a friend and colleague for many years, advised her, she was indifferent. Mei Zhen paid no attention to Ada's illegal behavior, and her attitude of distinguishing right from wrong pushed her to the bottom of her life. ...
In order to cover her, Mei Zhen accidentally met Ada and her colleagues who robbed the handbag shop where she worked. Mei Zhen was arguing with Ada on the road when she suddenly heard gunshots, and Li Xun also heard them. Ada abandoned Meizhen and fled, but Li Xun couldn't catch up. Later, Mei Zhen went to the shooting scene. At a glance, she found that a member of parliament and a member of Ada's political party had been shot, and the shooter was Cheng Yi. Li Xun is worried that Cheng Yi can't get out of the haze like himself ...
Li Xun soon discovered the relationship between Meizhen and Ada, and even found the stolen goods in Meizhen's house, and sued Meizhen for conspiracy to rob. In the detention center, Mei Zhen met the defense lawyer for the first time. Li Xun just came to ask Meizhen questions and found out that Walker was Meizhen's defense lawyer. What surprised him even more was that the walker was in a wheelchair and his legs were paralyzed.
When Li Xun saw Monkey again, his heart was full of confusion. Although he never dared to face it, Li Xun couldn't turn a blind eye to his confusion and began to investigate the experience of the traveler in the past five years. He found that it was the accident that really paralyzed the walker's feet. Walker's father Gao Lin (Liu Jiang) refuses to pay Walker's medical expenses, and his younger brother Gao Zheming (Huang Jiandong) is unwilling to take care of Walker. The feeling between the traveler and his family became weak, and his girlfriend left him, which brought great changes to his bright life. In the face of all kinds of misfortunes, instead of complaining, Monkey became more resentful and became a practicing barrister.
Li Xun offered to apologize to Zhehang. Zhehang didn't blame Li Xun, but comforted him not to blame himself, which made Li Xun feel more guilty. Li Xun found that although the walker was disabled, he lived more meaningfully than a healthy person, and he deeply admired him.
Walker's defense of Meizhen seemed to be in sight, but the prosecutor suddenly produced strong evidence that Walker had not noticed before. Walker could not argue, and Meizhen was sentenced to prison. When Li Xun saw Mei Zhen imprisoned, there was nothing he could do. He blamed himself for indirectly sending Mei-jin to prison, thinking that he was conceited and arrested Mei-jin, just as he was confident that he could hit the killer's key and let Zhe-hang have an accident, and he felt deeply guilty for them.
After Meizhen's case ended, Li Xun took the initiative to take care of Walker, and they soon became friends. Li Xun attended the banquet with Walker, so he got to know Du Chanzi (Lisa Lau), the daughter of business tycoon Du Yikeng (Li Zixiong). Gezi is interested in Li Xun, who works in the major crimes unit, but Li Xun thinks that his identity is very different and he is afraid to approach Gezi.
Mei Zhen has no fixed address after serving her sentence. At this time, she met Walker again, and Walker introduced her to work in the lawyer's building. Mei Zhen seized the opportunity to turn over a new leaf and her life got back on track. Mei Zhen doesn't want to associate with Walker, but Walker doesn't mind her status as a prisoner. They appreciate each other and develop into lovers.
Li Xun found that Cheng Yi was very nervous after returning to work. He was even more nervous about his gun. At the same time, Huiying also found that Cheng Yi had lost his gun before the robbery. After tracing, he found that Xiao Yongguang (stone ornaments), a retired police officer, took back his gun. Huiying and Li Xun began to suspect that the senator's death was not an accident. ...
Cheng Yi was exposed by Li Xun, and his mood became more and more unstable. He resigned and left the police force. When Li Xun heard the news that Cheng Yi committed suicide, he was very worried. Li Xun believed that Cheng Yi's suicide was related to Yong Guang, so he suspected that it was the head of Ma Qiyuan (Zhang Jicong), a wealthy businessman with close contacts with Yong Guang.
Cheng Yi's death was a great blow to Li Xun, and Monkey encouraged him to cherish the people in front of him. Li Xun laid down her heart and confessed to Zi Chu, who had been interested in Jiexun for a long time, and they became lovers. Chuozi became friends with Walker and Mei Zhen through Li Xun, and both couples envied others.
Li Xun is determined to find the truth for Cheng Yi. When investigating Qiyuan, he found that Zhehang had an unusual cooperative relationship with his enemy Qiyuan, and he began to lose sight of Zhehang. ...
On the other hand, Li Xun and Xunzi developed rapidly. They accepted Li Xun generously, but thought that he should devote himself to the life of the rich. Li Xun didn't want to deal with upper-class people because of his appearance, so he and Mei Zhen discovered some criminal secrets of everyone.
Li Xun thought he could continue to live happily with Chuozi without paying attention, but under Huiying's investigation, Li Xun gradually saw the truth and found that Zhehang already knew everything. Zhehang said that he was collecting criminal evidence and proposed to jointly expose evil deeds. When Li Xun thought that everything was settled, Meizhen found that Zhehang had been pretending. Facing Zhehang's true feelings and just choice, Meizhen doesn't know whether to turn a blind eye as before or open her eyes and stand up. ...