The king of Yao died, but he had only two daughters. Luoyang, the prime minister's son and his childhood sweetheart, the eldest princess Ziqing, became the highly anticipated heir. Unexpectedly, Ziqing died suddenly before their wedding, so he could only promise the little princess Ziye to Luoyang. But Ziye didn't seem to be as innocent as her age should be, and Luoyang always looked at Ziye with hesitant words. Is there any secret between these two people that cannot be told...