In the near future, memories can be read and played back. "Memory Submarine" Lin Mo, a marginalized person who can dive into the deep sea of other people's consciousness, salvages broken memory fragments all day long, but only forgets his own past. A mysterious commission leads him to a top scientist who has fallen into a deep coma. When he sneaked into the isolated island of consciousness known as the "Lighthouse", he accidentally came into contact with a forbidden memory related to his own life experience - "Whale Falling". A dangerous journey to pursue the truth begins. He must find an exit in the maze of memory, otherwise he and his client will be swallowed forever in the abyss of the past.
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