A scholar from a poor family was demoted to a palace servant due to cheating in the imperial examination. He secretly collected evidence of corruption from six ministries and used the inner court's hidden secrets to work step by step. He counterattacked from a toilet-sweeping eunuch to an imperial general manager. He overthrew a powerful official with each promotion level. In the end, he exposed the prince's treason with a blood letter, and in exchange for military power, the title of marquis and general.
