Agent Quinn is betrayed, killed, and reborn as prodigal young lord in Grand Xia. Framed for an affair with the Minister of Revenue's daughter, he faces a peace marriage conspiracy by officials and Liao Kingdom. Using modern intelligence, he outwits scholars, modifies firearms to crush Liao, and helps Eighth Prince seize throne. He joins Princess Aurelia and Liao's princess. He becomes King of the Northern March of Grand Xia.