In Gray Tower City, where memories can be bought and sold, everyone is selling the past in exchange for the future. Zero, a "ferryman" who has lost the memory of his past, his job is to deal with the most dangerous taboo memories in the city.
A strange transaction gave him a mysterious memory crystal that could not be destroyed. In the memory crystal, sleeping is the lingering consciousness of a girl named Lilia. She holds secrets that can subvert the entire city.
Overnight, Zero went from a scavenger in the shadows to the number one prey of the "Jing Yi Division", the highest authority in the city. Amid a ruthless hunt and the betrayal of his former companions, he is forced to form an alliance with a dangerous and charming intelligence trafficker.
Every "resonance" with Lilia is an adventure into the truth, and it also brings him one step closer to his buried past. When the fragments of memory pieced together a shocking conspiracy, he found that he not only had to protect a girl's last words, but also had to redefine what "self" was in this cold city.
This is a war about regaining memory and a journey to find the soul.
