Lin Xuanzhou, the youngest marshal in Daxia, was victorious in every battle and was powerful throughout the world. No one knows that his illustrious military exploits are all due to a mysterious system that can conduct war deductions. When he defeated Beirong and returned to the court, what awaited him was not a reward, but the suspicion and cold shackles from the imperial power and court. The tiger fell in Pingyang and the dragon was trapped in the shallows. The former marshal of the country was deprived of his military power and placed under house arrest in Beijing. However, what they don't know is that for Lin Xuanzhou, the battlefield is never just at the border. When he changed the system's deduction target from thousands of troops to the court where people's hearts are treacherous, a silent war to subvert Daxia has just begun.