An ancient city shrouded in fog and dust hides countless buried past events and unsolved secrets. The sound of the wind passes through the ruins of the ruins, and every echo involves the obsession of the dead souls of the past.
The heroine accidentally entered this isolated old city and was trapped by invisible shackles ever since. There are whispers in the empty alleys in the middle of the night, afterimages of old houses appear in the past, and strange things happen one after another. She followed the layers of echoes to explore the truth, and step by step uncovered the secret contract and tragic past of the old city that had been buried for centuries.
Obsession traps a city, and echoes lock it for life. When the mystery of the past is revealed, can she break free from the prison of fate and untie the thousand-year knot that has been entangled in her old city?
