The special homicide case that was unsolved in 1997 resurfaced 13 years later. Criminal policeman Wei Zhengrong, who wasn't able to find out the real murderer that year was traumatised and left the front line. The once fledgling new policeman Lu Xingzhi grown from his innocence and has become a meticulous criminal investigation expert. The many coincidences of the case brought the master and apprentice together again to hunt down the real culprit.
Secretary Gao Yun Xi leads a group of party members to help mobilize San Quan Village, a countryside village with deep history and culture that is falling behind rapid urbanization. Gao Yun Xi has to rely on her bravery and resources to prove to the villagers that the reforms will benefit the village.