In the dome city "Tianshu", memory is both a commodity and a weapon. While the elites are building their dream of digital immortality in the cloud, Lin Mo, a memory restorer in Xiacheng District, only wants to repair his incomplete past.
A mysterious business drags him into a fatal whirlpool. A blank memory crystal is actually the key to the conspiracy at the heart of the city. The nightmare of being hunted, betrayed, and forgotten resurfaced.
In order to survive, he must deal with the eyeing tech giants, the ruthless Thought Police, and the untrustworthy rebels. The only thing he can rely on is his cursed talent - "echo", an ability to sneak into the abyss of other people's memories.
When the truth was peeled back layer by layer, he found that what he wanted to repair was not only the memories of others, but also the city's collapsing soul and his long-broken self.
