Haechi

Prince Yeoning is a prince discriminated against because of his mother's peasant background. He returns to Hanyang to support Prince Yeonryeong take the throne against the tyrannic Prince Milpoong, who would do anything to take power. The Saheonbu is determined to uncover Prince Milpoong's crimes and bring justice to the kingdom. The power struggle between the Patriarchs and Disciples is just beginning.

The King decides to reinstate Prince Milpoong's great-grandmother from her disgrace and restore relations with Milpoong. This brings Milpoong one step closer to the throne. Meanwhile, Prince Yeoning is being chased by Park Moon Soo for allegedly substituting for the state exam. Could Prince Milpoong be behind this scheming? The Saheonbu and Yeo Ji intend to find Milpoong's Death Records and find the opportunity when he goes on a hunt.

The relation between Prince Yeoning and Tae Pyeong remains a mystery. The inspectors of Saheonbu are determined to investigate the murder of Yeo Ok and prove that Prince Milpoong is guilty. Meanwhile, Yeo Ji steals a box from Prince Milpoong supposedly containing valuable evidence. Prince Yeonryeong does not want to use illegal force to stop Milpoong from coming to power.

Moon Soo finds out that the Roh Tae Pyeong he was chasing after was Prince Yeoning. Prince Yeoning decides to spread a rumor about Prince Milpoong and his evil deeds. The rumor eventually reaches the king and the royal court, and the king orders investigators to submit a detailed report. Yeo Ji realizes that she had acquired decisive evidence for where the body of Tae Pyeong is buried.

Prince Yeoning decides to testify at the Supreme Court of Saheonbu. He confesses that he substituted for Tae Pyeong at the state exam and asks to be exiled for this crime. The officials, however, do not want to believe his accusations of Prince Milpoong. The Head of Saheonbu decides to arrest Prince Milpoong, and everything seems to go as planned.

Yeo Ji, Prince Yeoning, and the crew at Saheonbu celebrate with wine and by playing games. Prince Yeonryeong tries to stop his older brother from leaving for Tamna, but Prince Yeoning is not shaken. The Disciples spread a rumor about Prince Yeoning and try to discredit his testimony at the Supreme Court. The Patriarchs ask Prince Yeoning to withdraw his testimony at court so they can bring Prince Milpoong back out.

King Sukjong calls the Chief Inspector and orders him to help him make Prince Yeoning king. Meanwhile, the Patriarchs have decided to support Prince Yeonryeong. The Minister of Personnel persuades Prince Yeoning to withdraw his testimony and indict Jeong Seok for instigating false testimony. Prince Yeoning feels hopeless about the whole situation and has to testify again.

King Sukjong tells Prince Yeonryeong about his decision to make Prince Yeoning king. Prince Milpoong is sent away to Qing by the king for his crimes. Just as things start to get hopeless, somebody sends Prince Yeoning information containing Prince Milpoong's secrets and the location of his Deat Records. Meanwhile, Han Jeong Seok is killed in prison, and Prince Milpoong also kills Prince Yeonryeong.