Tracking

In the early 1960s, Shenzhen Port. Public security officer Li Minggang (played by Lin Lan) found a handbag that had been dropped, containing explosives and detonators. After investigation, it was discovered that the handbag belonged to Lin Yonggui (played by Gu Langhui), the nephew of veteran worker Lin Dexiang (played by Jian Ruichao). He was immediately arrested and interrogated. Lin confessed that he would blow up the power plant on the eve of National Day. Li Minggang planned his plan and asked Lin to tell the secret service agency to send someone quickly. Soon, female spy Xu Ying (played by Hong Bing) sneaked back to the mainland. She sneaked into the home of latent agent Qian Jiaren (played by Shi Jin). The cunning Qian decided to change the explosive power plant, choose another target, and used a "play hard to get" trick to confuse our public security officers. Li Minggang saw through the enemy's tactics. Through various superficial phenomena, he discovered that the enemy would make bigger moves next. For the safety of National Day, they launched a desperate battle with hidden enemies. The enemy hid explosives in a multimeter. At a critical moment...