In the near future where memories can be edited and deleted, Lu Chen, a top memory planner, can erase the most painful memories for his clients, but he cannot piece together the truth about his deceased wife's car accident. He is like a lighthouse keeper guarding an island surrounded by a sea of oblivion. One day, a mysterious woman named Ling Shuang brought a difficult request: to delete tiny "flaws" in a perfect memory. While diving into the depths of her cold and precise memory, Lu Chen accidentally discovered a familiar reflection, a secret that could overturn his entire world. He is forced to choose between his client's truth and his own obsession, and each dive brings him closer to the all-devouring sea of oblivion.
