In the future city "Amber City" where memories can be extracted, edited and deleted, Ling Su, the top memory architect, is a man who has lost most of his past. He makes a living by repairing and erasing other people's memories, wandering on the edge of light and shadow in the city. A mysterious commission breaks his numb life - a woman named Su Wan asks him to retrieve a core memory that was "stolen". When Ling Su dived into the deep sea of broken memories, he was horrified to find that at the end of the maze was the truth that he had buried with his own hands. He is not only a hunter looking for memories, but also a sinner who personally created this sea of oblivion.
