A Lost History of the Human World

Twenty years ago, the world experienced its first "Ebb Tide."

Unfamiliar cities appeared at dawn, dead streets pressed into reality, and countless people awoke in yesterdays that did not belong to them.

After the disaster passed, people thought life had returned to normal.

Twenty years later, history began to flow back again.

Chen Du is 24 and works for a company that clears out old homes. He cleans the rooms of people who have moved away and sorts through the belongings of the dead, whom no one came to say goodbye to.

He brings home the things no one else wants and puts them in a storage cabinet.

A ceramic rabbit with one ear broken off, an expired train ticket, a watch that has stopped, a letter that was never sent.

Ever since the Ebb Tide of his childhood, Chen Du has been able to see the stories these belongings once carried.

Then one day, he took half a crystal ball from the hands of an old man who had died of illness and saw an old shopping mall that was due to be demolished that very night.

To keep everything there from vanishing without a trace, Chen Du gathered every belonging connected to the mall and, for the first time, brought "yesterday" back.

That night, many people dreamed of the moment they most wanted to return to.

And in someone else's yesterday, Chen Du saw himself, too young to remember.

Only later did he understand that old objects weren't the only things people had abandoned.

There were also cities, eras, and civilizations whose existence no one would acknowledge anymore.

The second Ebb Tide is coming.

When the whole world begins to forget itself, at least someone must prove:

We once lived like this.