Alex is reborn into a parallel world Earth where bloodlines manifest power and the strong rule. The East is dominated by the Great Tang Empire, while the West is under the rule of the never-setting empire. At the age of 20, while traveling in London, he accidentally summons the world's most powerful artifact—the Sword in the Stone. Half an hour later, the crown princess of the never-setting empire descends from the heavens, sword pointed at Alex: Eastern man, either marry me, or the never-setting empire declares war on the Great Tang!