In the near future, memories can be retrieved, stored and played back. "Memory lighthouse" is an island that seals these precious or painful fragments. Chief Memory Keeper Li Wei, a man who chooses to protect the memories of others in order to escape his own past, lives in isolation day after day. Until a mysterious woman named Anya arrives with an unprecedented request: to completely delete a memory. When Li Wei went deep into that broken and contradictory memory, he discovered that it was not a simple trauma, but a shocking secret that could subvert his understanding of reality, human nature, and existence itself. Is it memory that he protects, or a carefully woven lie?