Yang Guang, deputy director of the Third Division of the Yanping National Security Bureau, was accidentally involved in a conspiracy involving an international espionage organization during an operation, and during the investigation, a woman named Zhao Yamao caused Yang Guang to note AAAA. Her identity and actions are full of mystery and are inextricably linked to the whole affair. With the escalation of the incident, Yang Guang and Zhao Yamao, who seem to be from different camps, are both involved in a complex whirlpool, and it is difficult to distinguish between friend and foe.

　　In order to fight crime and realize his dream of being a policeman, young Liu Ziming came to work in a criminal investigation detachment of the Municipal Public Security Bureau with enthusiasm, but the trivial and boring investigation work made him feel bored. Under the guidance of his master, he gradually corrected his attitude and participated in solving the case together with the team members. In the process of handling cases on the spot, Liu Ziming became more and more calm and sophisticated, and grew into a responsible criminal investigation captain, leading his apprentices to continue to solve various cases. After experiencing a series of big, important, strange, and strange cases, Liu Ziming has a deeper understanding of the good and evil in human nature, and has grown into an excellent criminal investigation captain. Master's unreserved teaching, the trust accumulated by his comrades-in-arms from birth to death, and the changes in his family and marriage made him truly realize the heavy responsibility on the shoulders of a criminal policeman, and he felt honored to be able to work as a criminal police officer to ensure social stability

The protagonist Hong San took his mother and friend Qi Lin to Shanghai to defect to Yan Hua and became involved in the power struggle between the two major companies. Yan Hua was a dock worker at this time, and he was elected as a labor leader despite the power. Hong San relied on his wit to save the day many times in the dangerous Shanghai Beach. Hong San married Jin Lan with the loyal man Shen Dayi, and Lin Yiyi, who came to the poster to avenge his father, became Mo Yi in the battle of wits and courage, and Lin Yiyi, who was dressed as a man, fell in love with Hong San. Hong San approached the rich girl Yu Mengzhu, and Yu Mengzhu fell in love with Hong San. Yan Hua was in distress and was rescued by the communist Liang Xingyi and joined the Communist Party. Lin Yiyi took risks for revenge, and Hong San ran to the end of the world with him. Lin Yiyi was killed, and Hong San returned to Shanghai Tang. Inspired by Yan Hua and Liang Xingyi's progressive thoughts, Hong San gave up his hard-won "good life" and devoted all his life to escort Liang Xingyi out of Shanghai. Hong San gradually understood that the path led by the Communist Party was the great future he wanted to pursue.

Niu Dabao (played by Bao Bell) wholeheartedly likes a woman named Yuan Yu'e (played by Wang Ou) and launches a warm offensive against her, but he did not expect to become a member of the Huanghuayi of the Jingshi General Post Station by mistake, and after that, Niu Dabao was shocked to find that Yuan Yu'e was originally a member of the Hong Gang, and the Hong Gang was the AAA of the anti-Qing gang that Huanghuayi vigorously suppressed and cleaned up.

Gao Fei (played by Gao Lu) is a doctor, although at work, she calmly responds to all kinds of emergencies and wins the trust of patients and leaders, but in her love life, she is simple and naïve, but she always makes inappropriate actions and says eee without thinking. Goofy had a brief marriage, but it ended in failure. After that, Goofy meets a man named Huang Cheng (Cho Byung-kun), and the two fall in love, and Goofy vows that this time, she won't mess up no matter what.

When a family does not have a father, the mother must maintain a stronger posture than the father in the family, pay more hard work, and shoulder greater responsibilities to maintain an AAA.

　The down-and-out middle-aged Wei Ping'an (played by Dapeng) makes a living by selling cemeteries with live broadcasts, and his client Han Lu (played by Song Qian) was smeared by rumors after his death.

In 2002, the thief wife of veteran thief Duan Hu (played by Zhang Guoqiang), Joanna (played by Yin Tao), was six months pregnant, but a theft sent the husband and wife to the police BBB. Xiang Qianjin (Sun Haiying), the director of the Guanyinqiao Police Station, is in charge of the case, and he enforces the law impartially while working with his apprentice Zhou Shushu to ensure the safety of Anna and the child in her belly. The child was born safely, and he was named Duan Yi by moving forward, hoping that the child would benefit the people in the future. The thief and the thief's wife were imprisoned, but Duan Yi became an inseparable existence for the Xiang family. Time flies, Duan Yi (played by Cui Can) enters elementary school, and Joanna and Duan Hu are also released from prison one after another. Not only do they have to think about how to get out of a new life, but they also have to think about how to get along with their own flesh and blood.

In 1929, the Chiang-Gui War broke out, and the warlord forces cut the BBB. Qin Wenyong, a member of the Communist Party, came to Nanning with the task of winning over the Gui armed forces, and the object of his struggle was his brother-in-law Zhang Yunlin, whose brother-in-law Man Haizi defected to Chiang Kai-shek due to a misunderstanding. The three brothers competed because of their different positions and beliefs. Zhang Yunlin, inspired by the revolution, uncovered the uprising, and finally dedicated himself to the revolution and died on the battlefield. Man Haizi experienced all kinds of contradictions and conflicts, understood the truth, and died on the battlefield. Qin Wenyong's close lover Lin Yao went through various tests and followed Qin Wenyong to join the Communist Party.

　　Liu Xiaojun (played by Dapeng), the owner of a car repair shop in Shancheng, is forced to resell black cars for his livelihood, but accidentally finds a little girl trapped in the trunk. As more and more seemingly unrelated people such as Qiqi (played by Ulan Toya Duo), brothers Xia Xi (played by Ou Hao) and Xia Tao (played by Sha Baoliang), dancing girl (played by Li Meng), and second-hand car dealers (played by Cao Bingkun) are all involved in the whirlpool of fate, the unspeakable secrets behind this mystery have gradually surfaced......