In the Marquis of Anping's household in the Song Kingdom, two pregnant women give birth on the same day. The concubine Su Jinyun uses medicine to deliver a daughter first: Li Bao'er, an ill-starred child. The principal wife, Zhou Shulan, later gives birth to the Ninth Princess, Li Yuanyue, a good-luck star sent down from the immortal realm to undergo a mortal trial. Su Jinyun swaps the ill-starred baby she gave birth to with a boy she has bought. The emperor mistakenly believes that the boy Su Jinyun presents was born beneath the auspicious, multicolored clouds that filled the sky when Li Yuanyue was born, and names the boy Tian Jingrui. From then on, the three children become entangled in a series of conflicts and disputes.
