He was the unpopular fifth prince of the Qingxuan Kingdom. When he was twelve years old, he was sent to the Cangyu Kingdom to be a hostage for several years. After many years of keeping a low profile, he became the emperor of Qingxuan Kingdom. She is the most favored little princess of the Cangyu Kingdom, and he is the idle seventh prince of the Qingxuan Kingdom. The love-hate relationship between the three of them has been doomed to start a bad relationship since they met.