Lin Mo is a "memory repairer" who can enter other people's fractured minds and mend memories that have been forgotten or tampered with. Yet this highly skilled repairer is being consumed by an incurable condition known as "memory loss syndrome," and his own past is fading into blankness.
One day, a mysterious woman named Xiao arrives at his door with an encrypted, dangerous memory fragment. When Lin Mo enters the storm-ravaged sea of her memories, he discovers not only a red door leading to a shocking conspiracy, but also a hazy image of himself. To uncover the truth and save himself, he must fight the ocean of forgetting on this island of memories.