Synopsis
In the 1980s in Northeast China, factories were in decline, and thefts were rampant. A retired sharpshooter named Gu Xuebing became an ordinary employee in the factory's security department. He admires a single mother named Xiao Jin and, by chance, discovers that Xiao Jin's son, Geng Xiaojun, was wandering on the edge of crime. Gu Xuebing is determined to bring him back to the right path.