Du Shaoying and Su Shaoqing are twin sisters, but in that war-torn era, the two sisters were separated and went to different places , Joined different camps, sister Su Shaoqing served in the Kuomintang, and sister Du Shaoying was a member of the Communist Party. Under the arrangement of the organization, Du Shaoying successfully replaced Su Shaoqing and became an important member of the Kuomintang Secrecy Bureau. And Su Shaoqing has been detained in the detention center, but suddenly she escaped and came to Du Shaoying to expose her true face. Seeing this, Ye Gongjin simply resorted to tricks and asked both sisters to leave the secrecy bureau. The point is to watch the fight between the two. He can draw out the people behind the Communist Party and wipe them all out. But what he didn't expect was that the two sisters put aside their previous suspicions, acknowledged their kinship, and joined hands to fight against the Kuomintang. In the end, in a battle, Su Shaoqing died in order to protect Du Shaoying, and Ye Gongjin was doomed to the end of the plan