One-sentence summary: In the 1990s, in order to protect his homeland, a retired special forces soldier accidentally stepped into the underground world of a northeastern border city. He grew up from an oppressed lower-class citizen to a generation of "benevolent and righteous brother", and finally completed the legendary epic of self-salvation in the torrent of the times.
· Core theme: On the black land of ice and snow, some people use morality as a weapon, while others carve morality into their bones and blood and will not change it until death.
· Era background: From the early 1990s to around 2010, the old industrial base in Northeast China was in the throes of transformation.
