In Xanadu, a future city where memories can be extracted, stored and traded, memory restorer Ling Shuying makes a living by repairing the broken memories of others, but has never been able to piece together his forgotten childhood. A bizarre case broke her peaceful life - Dr. Aiden, the master of memory technology, was found to be completely unconscious. His "core memory" carrying a lifetime of wisdom was completely erased by an unprecedented technology, leaving only a blank "data ghost".
The selfless order officer Li Jianyu was ordered to investigate the case. He found Ling Shuying, the only person in Xanadu who had the ability to decipher the "data ghost". One pursues the truth, and the other makes up for his forgetfulness. The two are forced to work together to sneak into the abyss of Dr. Aiden's erased memory. In that sea of oblivion composed of codes and emotional fragments, they not only have to fight against the invisible murderer hidden deep in the data flow, but also face a subversive truth: when memories can be tampered with, copied, and deleted, is "I" defined by real experiences, or is it shaped by implanted beliefs? And does that lighthouse that guides the direction illuminate the way home, or does it illuminate a deeper confusion?