Twenty-eight-year-old antique appraiser Jiang Moyao, a bronze door appeared in the basement of his home one night, and out came Ying Zheng, Wu Zetian, Li Bai, Li Qingzhao, and Genghis Khan - they were "forgotten" by history and trapped in the "historical gap" behind the door. Jiang Moyao is the descendant of the gatekeeper's bloodline.
The pursuers followed. The "Time Correction Bureau" believes that there is only one correct trajectory in history and vows to eliminate all "superfluous existences". Jiang Moyao's mentor Lin Huaiyuan has been lurking in the Correction Bureau for many years. After his identity was exposed, he was brainwashed into an enemy.
From the city to the golden grassland, from the empty city to the luminous river at the source of history, Jiang Moyao led five historical figures to escape and fight back, and gradually discovered the truth: history does not need to be revised, it only needs to be remembered. When she used her bloodline to fuse with the backup door to protect everyone, and half of her body turned into light, Xu Nian from two thousand years ago walked out of the long river of history to block destruction for her - and the three Correction Bureau machines were about to become escape doors to all time and space.
The gatekeeper is never guarding a door, but the way back for everyone behind the door.
