In the Xuri Factory, a former large state-owned factory, a female body with a severed foot was accidentally discovered in an abandoned sewage pool. The deceased was Shen Xiaozhou, the son of an employee.Lian Haiping (played by Chen Jianbin), a middle-aged detective who is depressed but hot-tempered at the inside, and Shi Qiangfeng (played by Chen Ruoxuan), an impetuous and hot-blooded rookie policeman, unexpectedly become partners. Although they have suspicions about each other, they must work together to find the real murderer.As one suspect after another entered the investigation field, the two discovered that behind the seemingly white-clad college student victim, there were many unexpected social aspects.At the same time, an old case that deeply entangled the two people gradually surfaced. The relationship between Lian Haiping and Shi Qiangfeng became confusing due to "an old case" and "a past event."While the case was pending, cases of female corpses with severed feet occurred one after another, casting a shadow over the pyrotechnics of the Rising Sun Factory in the past. Even Haiping was alert to discover that there was a force deliberately guiding the direction of the police investigation, and the fog seemed to see light., the undercurrent has already surged.