Eight years ago, the wife of Zhao Yichen, the captain of the Nanjiang City Criminal Police Team, Hu Jiaying, disappeared while pregnant, leaving only an 11-second recording of the police call. Eight years later, Zhao Yichen received an anonymous clue and found his daughter with aphasia in the Xu family in Xiguan City. At the same time, he learned that his wife had passed away a year ago. It turned out that Hu Jiaying, who was born in poverty and whose parents died early, was actually Xu Han, the eldest daughter of Xu Yunfei, a wealthy man in Xiguan! Xu Han also has a twin sister Xu Lian, whose voices and looks are very similar. The reasons for Xu Han's death are full of loopholes, but the police have not found key evidence. At the same time, the criminal gang that Zhao Yichen has been pursuing for many years gradually revealed its feet. They trafficked in people, sold drugs, opened casinos, and had inextricable ties with the Xu family headed by Xu Lian. In the heavy fog, lies and truth are intertwined. Behind the eleven-second police call, the delayed justice will eventually reappear in the sun.