Lin Shaobai was taken to the Zhabei Power Plant, and then he learned that Ye Shiwu wanted to blow up the Zhabei Power Plant, and this required the assistance of Rong Zheng, the chief engineer of the power plant, but the spy who went to pick up Rong Zheng was slow to come.When Ye Shiwu became suspicious, Lin Shaobai tried to escape but was intercepted.He lied that he was going to pick up the chief engineer and established a friendship with Mr. Rong.

Rong Zheng arrived late. Ye Shiwu was worried about fraud, so he called Lin Shaobai to test him.For their own purposes, the two people, who did not know each other, acted on occasion and hid it from Ye Shiwu.At the same time, Xu Wei returned to the police station to inquire about Lin Shaobai's whereabouts, but was unexpectedly forcibly taken to Zhoushan by Mao Sen.Rong Zheng pretended to go to the toilet to check Lin Shaobai's movements and found that Lin Shaobai had opened the handcuffs and was about to escape through the window.

Lin Shaobai was worried that Rong Zheng would tell the truth and was about to subdue Rong Zheng, but was subdued by the gray-haired old man instead.Lin Shaobai determined that Rong Zheng was a Communist Party member in disguise. Rong Zheng locked Lin Shaobai in the toilet again and warned him to keep his mouth shut if he wanted to survive.Rong Zheng seized the opportunity to destroy all the explosive detonators. At this time, Ye Shiwu also learned Rong Zheng's true identity through the phone.

A gun battle broke out between the two sides, Ye Shiwu was killed, and Rong Zheng was in dire straits. Fortunately, Lin Shaobai had the support. On the one hand, he could not bear the unnecessary death of the power plant workers, and on the other hand, he also wanted to take the opportunity to make meritorious deeds and show his favor to the Communist Party.Huzi arrived with a large force and the power plant was liberated. Rong Zheng tore off his disguise. His true identity was Lu Zhengyang, chief of the Security Section of the Political Department of the Ninth Corps.