During the isolation period, Shanghai toy dealer Ouyang Xiu used a singing doll as a cover to secretly deliver radio parts to the base area. When apprentice Lin Xiaohai was arrested by No. 76, The dolls with hidden bugs and late-night dock transactions were exposed one after another, and a game of authenticity unfolded in the dark night. Trust and betrayal are intertwined, and Ouyang Xiu must hold on to the last "air bridge" in a desperate situation.
