Spanning the Xia, Shang and Zhou dynasties, it revolves around the stories of Yuanzi, Ali, Tuzhen, Amei and others, where "a civet cat exchanges for a prince" and "a princess is taken hostage".
In the later years of King Qi of Xia, the princes were divided and the court was in turmoil. One day, there was a rumor in the palace that the queen gave birth to a son, named "Yuanzi", who was regarded as the destined heir. However, at the same time, war reports came from the north, and the Shang tribe was quietly rising and secretly annexing the Xia Dynasty's vassal states.
Motoko was smart when he was young, but he was frail and sickly. The Imperial Preceptor predicted: "This son will have a bad life. He must stay away from the palace to avoid disaster."