In the occupied areas in the 1940s, the situation in the underground world was turbulent. Rookie intelligence agent Gao Yi was forced to take over due to an unexpected mistake. He was involved in the core storm of the "Command Plan" and had an unexpected confrontation with the enemy master Nightingale Han Lin. From searching for evidence, outsmarting Jin Taisheng, to unlocking the mystery of identity, Gao Yi, Song Zihao, Shen Yuanyuan and others staged hilarious and dangerous spy battles. The truth is confusing, trust and betrayal are intertwined, they are in danger many times, and humor and wit are throughout. In the face of the ultimate, the choices of life and death, good and evil, love and hate allow everyone to grow and be saved.
