Description：In the early 18th century, the Joseon Lee Dynasty was in the reign of King Yeongjo (Song Kanghao). King Yeongjo loved his son deeply. After his eldest son died young, he placed all his hopes on his second son, Lee Sun (Yoo Ah-in). Not only was he canonized as the crown prince when he was just born, but he also arranged for famous officials to supervise his homework. However, things did not go as planned. The crown prince indulged in fun and had no intention of studying. King Yeongjo once promoted the crown prince to act as the agent of state affairs, but this made the father and son who stood at the pinnacle of power drift apart. On a rainy night, the crown prince broke into the palace with a stick and a knife. The next day, he was reprimanded by King Yeongjo for his intention to rebel and was locked in a rice cabinet. In the next eight days, the father and son, who were enemies, each recalled the past. Perhaps it would be better to translate them into civilian father and son. The cruelest thing in the inner court of the palace happened among the closest people...