A deputy mayor, formerly an associate professor of history, is transported to Chang’an in the summer of the eleventh year of the Tianbao era of the Tang Dynasty, becoming the youngest son of William Bolton, the infamous playboy of an illustrious family in the imperial capital, Henry Bolton. At this time, less than three years remain before the An Lushan Rebellion, and the powerful minister Edward Thompson has only a few months left to live. Most importantly, a great crisis arrives alongside the time traveler... How will he turn the tide?