In the Battle of Songhu, Gu Changfeng led a platoon and the whole army was wiped out. When he woke up, he was lying among the dead, with blood still oozing from the bullet hole in his left shoulder. He touched a Japanese military combat outline, but before he could read it, the guerrillas picked it up. A year later, he became the deputy commander of the Eighth Route Army's special agent company. The first task is to respond to telegraph operator Shen Bitao who was evacuated from Peiping. When he was picked up, he found that the woman had three different pieces of identification hidden on her body. Fujiwara Shuichi's intelligence department is planning a large-scale raid, targeting the arsenal in the Taihang Mountains. The outline in Gu Changfeng's hand happened to record the code rules of the Japanese military intelligence class. But the outline was missing the most critical three pages. Only Shen Bitao knew the contents of those three pages. She didn't say. He had to make her talk.