Wu Fengying, a CCP agent, in September 1947, impersonated Su Shaoqing and invaded the Second Division of the Kuomintang Secret Service in Nanjing and served as the leader of the Major Operations Group 2. Her mission was to protect the person lurking in the senior management of the Kuomintang Ministry of National Defense, code-named Huaishu. He is an extremely important source of intelligence for the Social Department of the CPC Central Committee. Su Shaoqing was a rigorously trained secret agency agent. She was secretly detained by the People's Liberation Army in a small mountain village in the north. Unexpectedly, half of them After the New Year, in March 1948, Su Shaoqing finally escaped from the small mountain village after three months of preparation and returned to Nanjing. When they were opposite the Secret Bureau, they unexpectedly discovered that they were actually a pair of twin sisters. They fought wits and courage in the Secret Bureau, and in the game between intercourse and counter-espionage, love and ruthlessness, they interpreted a life-and-death story, which was a legend of double spies. This legend lasted until 1958 and ended.