Wu Chenglong, the third prince of the Dayao Dynasty, led three hundred mysterious knights to fight against the barbarian rebels. He suddenly encountered a vision from the sky and was involved in the turbulence of time and space by a strange purple crack. When he opened his eyes again, the ancient battlefield of gold and iron horses turned into a bustling modern city, the majestic palaces turned into skyscrapers, and the tiger-headed golden gun in his hand became a "realistic prop" in the eyes of others. At a loss, he meets the smart girl Noi by chance, and the gentle touch of the royal jade pendant makes this time travel from absurd to real. The ancient prince who lives under the shelter of others must not only learn how to use "magical objects" such as electric lights and refrigerators, and adapt to a modern society where there is no smoke but rules everywhere, but he must always remember the obsession of returning to his homeland and looking for the lost soldiers. With the help and companionship of Noi, Wu Chenglong, with the perseverance and pride of a prince, struggled to gain a foothold in a strange time and space. The secret of time travel, the way back, and the collision of two completely different worlds were quietly beginning.
