Li Tan transmigrates to the Great Tang and becomes the eldest son of Emperor Xuanzong, Li Longji. With a Slacker System in tow, all he wants is to lie low, level up, and collect rewards. But Emperor Xuanzong, Li Longji, overhears his thoughts. Determined to create the legendary Kaiyuan Prosperity, the emperor keeps setting Li Tan difficult challenges, pushing him into the political maelstrom of the Li Tang dynasty.
A father and son are never short of quarrels. Tired of merely reacting to every move, Li Tan decides to strike back. And so they embark on a tale of the High Tang unlike any other.
