Once he traveled through time, he was a good-for-nothing prince and was given the title of prime minister by the emperor. It was unfortunate. After redeeming himself, he came out of the tiger's den and entered the wolf's den. Fortunately, he met his mentor. The mentor asked him to help the grumpy emperor to dominate the world. Oh my God, why was he so unlucky? Can he still go back? He is the emperor of Nanxia Kingdom, but no one knows that in the dead of night, he always thinks of another world and that person. How will the two of them unify the world in the future, and how will they return to the world that belongs to them both?