In a future city where memories can be retrieved, stored and deleted, Ling Chen, a top memory organizer, makes a living by erasing the pain of others, but is unable to piece together his own broken past. When a mysterious woman named Yi comes to entrust her with a memory that seems ordinary but contains abnormal data, Ling Chen's peaceful life is completely broken. The nautilus, which was a token of memory, unexpectedly touched the reverberation he had buried deeply. In pursuit of the truth, he embarked on a dangerous road and gradually uncovered a shocking conspiracy. This city is not forgetting the pain, but harvesting the truth. His island turned out to be floating on a sea of lies.