In the "Fantasy City" where technology can accurately erase memories, Lin Mo is a top memory cleaner, cutting off the painful past for clients with a scalpel-like calmness. He believed that forgetting was the best mercy, until a mysterious old man commissioned him to erase a non-existent memory - a beacon of tears. This commission was like a stone thrown into the backwaters of Lin Mo's heart, causing ripples in his own blank past. In the process of pursuing the truth, he met Xiao Tong, a memory archivist who firmly believes that "every memory should be treasured." When the clues of "Phantom Memory" point to a huge conspiracy, Lin Mo is forced to face the cruelest choice: continue to live in a carefully constructed peaceful lie, or recover the bloody truth that may completely destroy him?