On the night when his father died of illness, Shen Yan's family was devastated, leaving only an iron box that could not be opened. In order to investigate old cases, he was forced to leave home and go to Beijing. Along the way, he was ambushed at the ferry, assassinated in the ruined temple, wronged by the county government, and besieged and killed in the mountains. The former school boy was gradually pushed into the situation amidst the wind, snow and conspiracy. When he finally stepped into the capital, he discovered that it was not just the Jianghu people who really wanted to kill him.