In the near future where memories can be retrieved and sealed, Lin Mo is a "memory cleaner" who specializes in dealing with painful memories abandoned by people. He is like an island, calmly watching over the turbulent sea of emotions. Until one day, a woman named Su Qing brought a bloody memory that was not her own and about a non-existent lighthouse. This "drift bottle" broke Lin Mo's calmness and involved him in a huge conspiracy. In order to explore the truth, he had to dive into his darkest past that had been sealed for a long time, and face the deep sea called "oblivion" that he had created with his own hands.
