Liu Xuran, the head of the General Affairs Section of the Ningzhou Station of the Secrecy Bureau, returned from a business trip, but unexpectedly got involved in the trouble of tracking down an undercover agent. Can she cope with it as an undercover agent?
Her relationship with Shen Rongxuan, the chief of the Intelligence Section, is uncertain. Murong Ze, her childhood sweetheart, has returned. Where should Liu Xuran's relationship go?
"Project Poison Vine", assassinations are happening one after another. How to break the situation?
An insider was discovered within the party. Is it from within the liberated areas or among the undercover agents sent out?
Liu Xuran and Shen Rongxuan are suspicious of each other. Is this true or is it someone's conspiracy?
Everything seems to be controlled by an invisible hand. Who is this person?
In the turbulent times, only faith guides the way forward!
Concept: The feelings of family and country of little people in the big background