Behind the glamorous global financial system lies a money laundering empire called "Ghost". It has no fixed headquarters and no physical accounts. It only has a set of algorithms called "Prometheus" that wanders in the dark web, breaks black gold into pieces, and "passes through the wall" in the global banking system through complex derivatives transactions. Former central bank investigator Lin Zhixia discovered a series of encryption keys pointing to the "ghost" after her best friend Chen Xu "committed suicide" in a bizarre way. In order to uncover the truth, she was forced to become a "night watchman" who wandered on the edge of the law. Using the algorithm core left by Chen Xu, she launched a highly intelligent cat-and-mouse game with multinational financial giants and internal undercover agents. From the secret castle in Zurich to the abandoned mines in the Alps, from the data center in Iceland to the hearing site of the International Financial Stability Board, Lin Zhixia not only has to fight against the all-pervasive "ghost", but also faces the greed and betrayal of human nature in the face of huge profits. This is a duel between algorithm and algorithm, and it is also a difficult reconstruction of justice and order on the digital ruins.
