In the near future world, a high-dimensional creature called "Light Eater" quietly invades the earth and distorts the rules of reality through the "alienation zone". Gatekeeper Zhou Mo has the ability to control "spiritual connections" and is responsible for guarding the "Bronze Gate" that connects different dimensions. When he met researcher Qin Zheng, he found that the consciousness of the ancient watcher was sleeping in her body - and the Jingwu Society was trying to use her as a weapon to launch the "Ark Project" to replace the earth with a parallel universe to escape the harvest of the Light Eaters.
As the Alienation Zone continues to expand, Zhou Mo and Qin Zheng go deep into the Seventh Alienation Zone in New York, looking for the legendary "Mirror Door". They discovered that what the first-generation Gatekeeper left behind was not a defense system, but a time trap. In the end, Zhou Mo sacrificed his spiritual network and created a quantum clone to deceive the Light Eater, while Qin Zheng merged with the Watcher's consciousness and became a new balance point. However, the price of victory is that Zhou Mo loses his power, Qin Zheng's memory gradually fades away, and the two find a new future between forgetfulness and the truth.
Concept: Sacrifice and redemption, memory and identity, deception and truth, balance and price