As Zhu Di's fourth son, Zhu Gaoyu just wants to live a stable life. However, his father set him up and sent him to death row. In prison, he met a mysterious old man and learned a lot about the world. Many years later, when Zhu Di wanted to establish a prince, the civil and military officials in the court shouted in unison: "Please release the fourth prince and take the throne in the East Palace!"
