In the near-future city with flashing neon lights, there exists a special profession-dream mediator. They do not modify dreams, but guide people to face their subconscious fears and desires. Lu Ming is such a skilled tuner. On a rainy night, he received a special visitor: Lin Xia, who has been troubled by recurring dreams for a long time.
A strange red door always appears in her dreams, and there seems to be a disturbing secret hidden behind the door. When Lu Ming tried to help Lin Xia explore this dream, he accidentally discovered abnormal energy fluctuations and mysterious binary codes. What is even more disturbing is that a strange luminous mark appears on Lin Xia's wrist, and this mark seems to be related to the disappearance of her late father, the legendary dream scientist Dr. Lin Lan.
Soon, the appearance of the mysterious organization "Deep Divers" broke the calm. This organization, which attempts to control dream technology to shape reality, is eyeing Lin Xia. Lu Ming had to take Lin Xia on the run to find his master who had been missing for many years - the only legendary mediator who escaped from the "Deep Diver".
During this escape, they gradually discovered that behind the red door was not only the truth about the death of Dr. Lin Lan, but also hidden astonishing power that could subvert the real world. And Lin Xia may be the only one who can open this door, or he may be the only one who can close this door.
