In Xinxing City, memory is the most expensive commodity and the heaviest shackles. The upper-class elites consume the life experiences of others, while the people at the bottom sell their own pasts to survive.
Lu Li, a memory mediator who lives in the shadow of the city, is the top craftsman in this abnormal ecosystem. He can repair any broken memory, but he can't find his past. A dangerous commission from the upper city in the clouds completely involved him in a conspiracy that could subvert the entire world.
The broken core of "spiritual memory" not only hides the dark original sin of the ruling group's "eternal life technology", but also points to the starting point of his blank life.
When his former pursuer becomes his only ally, and when his forgotten identity becomes the deadliest weapon, Lu Li must make a choice: Should he continue to be a lingering "prisoner of spiritual memory", or should he ignite himself and become the only reverberation that illuminates the darkness?