Seraphina Cavanaugh is bound to a System and transmigrates, becoming the debauched Grand Princess of Great Qian. To survive, she tries every means to reform the enemy nation's Political Hostage, Alistair Pierce, and wins his heart. Alistair Pierce returns to his country, ascends the throne, and comes to marry Seraphina Cavanaugh, bringing the entire kingdom of Veridia as her dowry. Seraphina Cavanaugh purges the court of Great Qian, ascends the throne as Empress, and rules the world.