Forgot the intersection of time and space. Chongyan, a beautiful young man who has no interest in government affairs, becomes the king of a country. He only cares about the lover in his memory who is not sure whether he exists. There are dangers around him and the throne is in danger. The brother who loves her deeply forces her into a dead end. She signs a strange contract with her ambiguous prince and a transparent man. The whereabouts of the man she loves most is unknown... It is cold at the end of the year. I only want to take over this world because of your beautiful smile that has lasted for thousands of years...