After the Songhu War in 1937, Shanghai became an isolated island. Gu Jinran stitched up wounds during the day and stitched up the intelligence network at night. Until a new "Special Interrogation Class" was established in the Special High School - the instructor turned out to be Mariko Akiyama, a Japanese student he had taught at Peking Mission School. Liu Jingting was caught in the devil's cave, No. 76 Ma Henian set up a chain trap, and Shen Tinglan sent half a blood-stained surgical chart. Gu Jinran knew that this time he had to walk into the torture chamber where no one had ever come out alive. He used a pair of surgical scissors to untie the knot, used Jianghu rules to deceive the mole, and reversely deduced the Japanese troop deployment plan on the electric chair. But Kenji Doihara personally revised the script - the protagonist thought he was fishing, but he was actually the bait. Click to read and see how Gu Yiran took advantage of the situation, completed the most beautiful counterattack on the torture rack, and used faith to recast the dawn of the isolated island.