In the future, the "Forgetting Office" provides people with services to erase painful memories. Lin Chuan is a "memory scavenger". His job is to process abandoned memory data, and he faces the pain, regret and sadness of others day after day. Until one day, he accidentally discovered a fragment of broken memory that did not belong to any client: a girl playing a mysterious piano music under the lighthouse on an isolated island. The melody awakened a certain void deep within him. In order to explore the truth, Lin Chuan broke the taboo and began to piece together this memory in private. Little did he know that he was heading step by step into a huge vortex that could subvert the entire memory technology system and be closely connected with his tampered past.
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