Zhang Xuan, a temporary worker doing odd jobs on a film set, unexpectedly travels to ancient times while driving a divine car. Through a twist of fate, he saves Li Fengge, the Grand Princess of the Empire, who has been targeted for assassination. Taking advantage of the car's ability to travel freely between the modern and ancient worlds, Zhang Xuan gradually helps Li Fengge bring corrupt officials to heel and repel the Northern Barbarians. Ultimately, she wins the battle for the throne and becomes the first empress of the Great Qian Dynasty. Zhang Xuan is also granted the title of Imperial Consort and enjoys a comfortable, happy life in the ancient world.