The Northern Song Dynasty and Liao Dynasty were in a state of war. Baiyun Town was besieged by the Liao army for three months, with no food available and the people struggling to make ends meet. At this time, it is rumored that there is a mysterious homicide case inside the city, and the Liao army outside the city has erupted into the 'Blood Soldier' case. Just in time, Bao QingTian was demoted here and ordered to investigate the case. When Bao Qingtian, Gong Sunce, and Zhan Zhao arrived at the crime scene, they found that the truth exceeded their understanding.