Adapted from Zheng Zhi's novel "Victim in Me", Nobody Knows tells the story of a ten-year-long gloomy past of several adolescents. Teenage Qin Li got boycotted and teased at school because his father had committed robbery homicide. Yet, the transfer student, Huang Shu, together with his friends Wang Di and Feng Xuejiao, stood firmly by his side, and the four of them formed a solid friendship. However, the things that happened as they grew up kept challenging their relationship. To support each other or to betray? What would they choose to do?

In the economically developed eastern province of Guangdong, Luoyuan County is a county seat with the lowest public security status, and the flood tide of the era of sweeping and eradicating evil has engulfed it. The young criminal policeman Wu Jian encountered the obstruction of the underworld forces on the way to investigate a shooting case, and the evidence he handed back to the police force disappeared. He could not clear the suspicion, only Wen Luyang resolutely chose to believe in Wu Jian and invited him to cooperate Task Force work. Wen Luyang, who doesn't play cards according to the routine, and the upright guy Wu Jian, who is thick and thin, have formed a pair of case-solving combinations with different styles.

Thirty years ago, Qiao Zu Wang and his wife welcomed their fifth child into the world. But what should have been a time of rejoicing soon turned into a period of overwhelming grief as Zu Wang’s wife slipped quietly from this world. Now left to raise his five children alone, Zu Wang’s true colors were revealed. Selfish and unfeeling, Zu Wang turned all of his focus inward, leaving his children to fend for themselves. Realizing his father would never be the man he ought to be, the eldest son, Yi Cheng, voluntarily stepped into the role of caretaker. Fully aware of the fact that they were now on their own, the younger Qiao siblings, Er Qiang, San Li, Si Mei, and Qi Qi, came alongside their big brother, willing to do whatever was necessary to keep their family together. Despite overwhelming odds, the Qiao siblings not only survived but thrived.