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.
The film is based on seven true stories from the front line of poverty alleviation. These seven stories reflect the different strategies of poverty alleviation models of the country in the context of the general era: insurance poverty alleviation, green poverty alleviation, education poverty alleviation, rural e-commerce poverty alleviation, employment poverty alleviation, industrial poverty alleviation and technology poverty alleviation.