Three years ago, Chen Ye's sister Chen Qingwu suddenly disappeared.
What's even weirder is that everyone is gradually forgetting her. There are blanks in the photos, names are missing from the files, and even his parents firmly believe that Chen Ye never had a sister.
Until Chen Ye boarded the last subway train that didn't exist.
The faceless passengers, the terminal leading to Zhaoyao Mountain, and the tampered records of "The Book of Mountains and Seas" allowed him to see the missing parts of the world for the first time.
Chen Ye thus awakened to "see the missing" - he was able to see the deleted names, history and rules of mountains and seas.
But every time he reads the truth, he must actively hand over a piece of his own memory.
In order to find his sister, Chen Ye formed a hiking team with Jiang Zhaoyue, who can write temporary rules, Lu Chenzhou, who is destined to be forgotten, and Xiaobai, the blackmail beast who can never tell the truth directly, to investigate the remains of mountains and seas that have invaded subways, schools, reservoirs and old cities.
As the truth gradually emerged, Chen Ye discovered that his sister was not kidnapped.
She took the initiative to delete herself from reality and the Classic of Mountains and Seas, and entered alone into the nameless place where all forgotten things gathered.
The closer Chen Ye gets to her, the more likely he is to forget her.
When there can only be one world, one mountain and one sea, who has the right to decide which names should exist, and who will write the only history?
This time, Chen Ye didn't want to accept the answers left by others.
