Lin Feng, the former "memory architect", woke up on an isolated island in the sea called "Mnemosyne" and lost all memories of his crimes. This high-tech prison operates in a cruel way: prisoners must trade their precious personal memories for fragments of the truth about the past. Every exploration means a divestment of oneself. In order to uncover the conspiracy that sent him here, Lin Feng was forced to embark on a huge gamble with forgetfulness. He must find loopholes in the cold system logic, form an alliance with mysterious inmates, and fight against the invisible warden. However, when the veil of the truth was lifted layer by layer, he found that the most terrifying thing was not losing his memory, but remembering who he really was.