In SGD 217, memories have become a commodity that can be stolen, bought, sold, and tampered with. And he is one of the most outstanding "memory thieves".
A failed mission made him discover that his mind was full of memories that did not belong to him, and his entire identity was a carefully woven lie. From a hunter to a prey, he is forced to embark on the road to escape, just to uncover a truth that can subvert the world - a technology called "memory immunity."
When the past becomes the most dangerous battlefield, what he must regain is not only his own memory, but also the future of free thought for all mankind.