Zhou Tian, who was abducted by a strange old man and practiced for eighteen years, has become the undefeated Dragon King of the Dragon Court. After breaking through the magical power, he went down the mountain to find nine peerless sisters. He successively reunited with his sisters, including the eldest sister of the chairman, the eighth sister of the Public Security Bureau, and the fourth sister of the miracle doctor. With his strong physical and medical skills, he helped his sisters solve problems such as business crises, family conspiracies, and personal dangers. On the way, he conquered the forces, punished the evildoers, and met Long Ba's sister Dong Sihui. He accidentally discovered that the ninth sister had lost her memory. In the process of protecting her relatives and exploring the city, he wrote the passionate legend of the Dragon King.