Yang Guang, Deputy Director of the Third Division of Yanping National Security Bureau, accidentally became involved in a conspiracy involving an international spy organization during an operation. During the investigation, a woman named Zhao Yaning caught Yang Guang's attention. Her identity and behavior are full of mysteries, intricately linked to the entire event. As the incident escalated, it seemed that Yang Guang and Zhao Yaning from different camps were both involved in a complex vortex, making it difficult to distinguish between the enemy and us. Faced with the traps carefully set by the enemy, Yang Guang went deep into the tiger's den and engaged in a series of thrilling struggles with hostile forces.