Twenty years ago, the world experienced its first "low tide".
Strange cities appear in the early morning, dead streets squeeze into reality, and countless people wake up from a yesterday that does not belong to them.
After the disaster receded, people thought life had returned to normal.
Twenty years later, history begins to flow back again.
Chen Du is twenty-four years old and works in an old house cleaning company. He cleans the rooms of those who have moved away and organizes the belongings of the deceased who have no one to see them off.
He would take things that others didn't want home and put them in a storage cabinet.
A ceramic rabbit with broken ears, an expired bus ticket, a stop watch, and an unsent letter.
Since the ebb of the tide in his childhood, Chen Du can see from these relics the stories they once carried.
Until one day, he took off half of the crystal ball from an old man who died of illness and saw an old shopping mall that was about to be demolished that night.
In order to prevent everything there from disappearing silently, Chen Du took all the relics related to the mall and let "yesterday" come back for the first time.
That night, many people dreamed of the moment they most wanted to go back to.
And Chen Du saw himself in other people's yesterdays before he could remember anything.
Later he realized that it was not just old things that were abandoned.
There are also cities, eras, and civilizations that no one acknowledges their existence.
The second low tide is coming.
When the whole world begins to forget itself, at least someone must prove that——
We have lived this way.
