In the near future where memories can be read and tampered with, the top "Memory Submarine" Lin Mo washes his hands due to a fatal mistake and lives in seclusion in the world. However, when a mysterious client brings him a tricky assignment - to infiltrate the broken mind of a top scientist who has fallen into a deep coma to find a secret that could turn the world upside down, he is forced to return to his old profession. Lin Mo discovered that in this sea of chaos composed of oblivion, there were not only the secrets of the target, but also a "ghost" that followed him everywhere and wreaked havoc. This ghost seems to know everything about him, turning even his most painful past into a trap. He must fight an invisible enemy on this island of memory and face the self he has been trying to forget.
