In New Arc City, memory is the most expensive commodity. Happiness can be sold, skills can be purchased, and pain can be deleted with one click.
Lin Zhou, a doctor who makes a living by repairing broken memories, has long been numb to this world of lies. Until one day, a mysterious girl code-named "Zero" was sent to his clinic. Her memory is like a perfect white paper, completely erased, but deep down there is a storm that can overturn the entire city.
In order to protect her and explore his dusty past, Lin Zhou was forced to become an enemy of the "Eternal Life Group", a giant enterprise that controls memory technology. From the neon-lit skyscrapers to the dark underground black market, every step is on the edge of conspiracy and betrayal.
When the soul of the city is about to be formatted, and when former close friends turn into ruthless enemies, Lin Zhou must make a choice: Repair a tampered future, or retrieve a forgotten truth?
In this war between existence and nothingness, the only thing he can believe in may be the last echo that is about to disappear.