In the near-future city "Fantasy Capital" where memories can be extracted, woven and traded, Lin Mo, a top memory expert, has forgotten the most critical memory in his life - about the rainy night when his lover Xiaoran disappeared. He can repair everyone's broken past, but he can't touch the blank space in his own heart. When an anonymous memory fragment is delivered, and the clue points to an underground trading market called the "Sea of Oblivion", Lin Mo is forced to embark on a dangerous journey. Not only does he have to fight against the dark forces that tamper with his memory, but he also has to face a cruel truth that he has forgotten that may completely overturn his life. Is he a victim or a sinner?
