Deep in a forgotten rainy alley in the city, there is a shop without a signboard. Its owner, Su Jingci, is a "memory restorer." He can dive into the sea of broken memories of others and repair the fragments broken by trauma, at the cost of carrying the emotional burden brought by those memories, but his own past is blank.
One day, a special visitor knocked on the door. Forensic architect Lin Yanbei, a man who only believes in data and logic, is trapped by an unbreakable key memory about a fire. This fire not only took away the lives of his closest relatives, but also became the inner demon that made him unable to move forward. With doubts and the last glimmer of hope, he found the legendary Su Jingci.
When Su Jingci took over the only token related to that memory brought by Lin Yanbei - a key that was deformed by fire, for the first time, he glimpsed a fog related to his own blank past in other people's memories.
Two men imprisoned by memory, one in order to find the truth, the other in order to find himself, embarked on a dangerous journey of memory restoration. They dive into a memory realm built of emotions and fragments. Not only do they have to face the monster deep in the memory owner's heart, but they also have to be wary of the repaired truth, which may swallow the two of them completely. Memory is both a destination and an abyss. When the lost puzzle pieces are picked up one by one, what emerges is redemption or a more cruel despair?
