Zhang Beijing loss his face at his son’s engagement party. After that he refunds the sense of purpose by helping Liu Angxi, a screenwriter of the Beidiao Neighbour's talk show. However, he was pushed into the limelight after being used as material by Liu Angxi, and their friendship broke down
In 1945, Harbin has come under the rule of Japan's puppet state known as Manchukuo. Communist agent Song Zhuo Wen successfully infiltrates Harbin Secret Service where Guan Xue holds a post as the chief of special police.
An accidental death of the suspect leads to the entire team of the Third Division being imprisoned. Six years later, team leader Cheng Bing is released but remains consumed by the case. Over the next eleven years, he lives a normal life while secretly tracking down the killer, determined to see justice served.
After an accident puts his son in a coma, his father writes a fake suicide note creating a situation that spirals out of control.