In a world where speech is controlled, forgetting is a disease and remembering is a sin.
The cleaning official Lu Ci's job was to clean up the last words of the deceased until he discovered that his lover Su Wan was suffering from "mutism" - she forgot "salt" first, then verbs, and finally her entire life.
In order to fight against the system's obliteration, Lu Ci decided to break into the "Yuyuan", the deep sea of consciousness.
When the world denies her existence, he uses the sound of her breathing as proof.
This is a redemption at the cost of being "forgotten."
