Seventeen-year-old Xia Zhiying is the daughter of the prime minister of the Southern Kingdom and a concubine appointed by the royal family. Her sister Xia Zhidie wanted to replace her sister and designed her to fall off a cliff. She happened to be resurrected by a 21st century girl named Xia Ying. Why did he know that this woman was not the prime minister's daughter? Why did he always look at her with pity and pain in his eyes? A series of questions will be answered by Koala.