In the third year after the fall of Panshi City, Shen Fangdu became the biggest traitor among the people. The Japanese army invited him to be the surgeon, and the puppet army invited him to drink. He smiled and dealt with the three forces. No one knew that sepia ink for secret writing was hidden in the basement of the mission hospital, and military deployment plans were engraved on the back of the scalpel. Until an emergency call, he sutured the guerrilla captain's wound; during a medical visit, he used secret code to reveal the loopholes in the city defense. The people's curses became louder, but the captain who was rescued by him even bit off his tongue in prison and did not confess to him. He only had three chances to use the underground connections left by his father. The first time, the old traffic officer "missed"; the second time, the contact girl jumped into the river. The third time, he clutched the last signed pass, and outside the door were the neighbors who were holding torches and wanted to burn him to death. The artillery fire outside the city finally started. But at that time, Shen Fangdu had already stitched up the stab wound in his abdomen and swallowed the information into his stomach.