Undercover Yun Mian was ordered to infiltrate the North China Military Government and approach Marshal Qi Han under the alias of a singer; Qi Han was suspicious by nature, but he forced her to kiss her after a dance to test her reaction; Yun Mian pretended to be panicked, but secretly wrote down the location of the study key; Qi Han became interested in her and arranged She became a personal secretary; Yun Mian began to have access to core documents, but his adjutant Shen Qian was always vigilant; Yun Mian used false information to stabilize his superiors, and his heart was subtly shaken by Qi Han; Qi Han discovered loopholes in Yun Mian's life experience, and the relationship between the two suddenly became tense; Yun Mian designed for self-protection She took a bullet for Qi Han in exchange for trust; Qi Han took her to a confidential meeting, and Yun Mian took the opportunity to copy the map; Shen Qian had forged evidence, and Qi Han faced a choice; Yun Mian was put under house arrest and interrogated, and was forced to confess part of his life experience; Qi Han suffered but did not kill him; her superiors strictly ordered to advance in advance Yun Mian delayed the operation and was reprimanded; Qi Han discovered the coup plot and suspected that Yun Mian was an insider; Yun took the risk to pass false information to help Qi counterattack; in the final confrontation, Yun Mian's gun was pointed at him, and Qi Han found out the truth too late; when the smoke cleared, Qi Han regretted it for the rest of his life, and Yun Mian's life or death was uncertain
