In the near future where memories can be accurately deleted, Silence, the top "memory cleaner", is known for his calmness. He can strip away anyone's most painful memories, but he can only face his own past. When a mysterious woman named Lin Ruoyu came with a seemingly simple request - to delete all memories of her late husband Lu Yuan, Shen Mo took over the business. However, when he dived into the carefully constructed sea of memories, he discovered that there were turbulent undercurrents beneath the calm surface. What should have been a sweet past was actually guarded by an island-like lighthouse, a secret that could overturn the world. This cleanup is not only a contest of technology and will, but also a cruel torture of human nature, love and sacrifice. Silence is forced to make the final choice between the client's oblivion and the truth of the world.
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