Season 1

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…

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 P…

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 bo…

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 …

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 …

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…

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 with…

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 i…

The Crown Prince has become king but does not win respect because of a lack of an heir. He is powerless at court. Meanwhile, Prince Yeoning meets the Minister of Personnel to tell him that Prince Milpoong probably kille…

Yeo Ji and her colleagues think Prince Yeoning has betrayed them. They were kicked out of Saheonbu and are now trying to make ends meet. It's finally Moon Soo day of the exam, and a suspicious man tries to help him get …

Yeo Ji and her colleagues find out that Prince Yeoning had been supporting them all along. It's finally the day the exam results are announced, and Moon Soo fails to find his name on the list. He is certain that there i…

Prince Milpoong is hosting the delegate from Qing Dynasty and takes him out for hunting. Prince Yeoning appears out of nowhere and interferes with Milpoong's plan. Minister of Personnel and the Patriarchs are in a situa…

Prince Yeoning returns to his former colleagues Park Moon Soo and Yeo Ji and tells them he was behind the investigation on exam corruption. Prince Yeoning is now determined to become king. But the Minister of Personnel …

Moon Soo and his colleagues respond to the Saganwon by rallying the Confucian scholars to protest the corruption going on among the Patriarchs. Prince Milpoong is aware of the tables turning and decides to take action w…

Chang Joong and Yi Gyeom meet the king to recommend Prince Yeoning as the Crown Prince. Meanwhile, Moon Soo and his colleagues notice that Yeo Ji isn't back after she left to talk to the students. It turns out the assas…

Yeo Ji is found severely injured in a barn. Her colleagues bring her back home and call the doctor to treat her. The king's royal guards arrive to announce that Prince Yeoning has been made Crown Prince. Dal Moon, who o…

The Qing is rumored to dealing in the human trafficking of girls from Joseon. Yeo Ji is recruited as an undercover investigator on the case. Prince Yeoning is unhappy at Yeo Ji being constantly in danger. Meanwhile, Moo…

Dal Moon's men are investigating the human trafficking case by Qing. The new courtesan house emerges as their target as someone from Qing owns it. A murder occurs of a nobleman, and Min Jin Heon and the Saheonbu are bot…

Ji Pyeong is murdered, and Prince Yeoning is witnessed to be the murderer and it arrested by Saheonbu. He is investigated by Saheonbu but is not willing to speak the truth. Meanwhile, behind the murder cases are what is…

Saheonbu threatens to resign all its members unless the right to investigate the murder case involving Prince Yeoning is given to them. The king calls Prince Yeoning and asks him to tell him everything he knows about th…

The girl belonging to the master murdering group was arrested, and Prince Yeoning is accused of supporting the group. The Patriarchs are putting pressure on the king to have the Crown Prince dethroned. Moon Soo and his …

The nobility demands the king to dethrone the Crown Prince, but the king is clear that this will not be granted. Prince Yeoning does his part by attending a banquet and making a speech on behalf of the peasants, speakin…

Patrolmen find something suspicious while doing their routine patrol. The people praise Prince Yeoning for standing up for them, and the blame naturally falls on the Saheonbu. A cover-up murder case is revealed when Moo…

Section Chief of Personnel Ik Soo was caught while receiving bribes and ordered the patrolman to be killed when he tried to report the incident. The table is about to turn in favor of the Disciples when Prince Milpoong …

As Yoon Hyuk takes office, he orders the officials of the three agencies to all be re-evaluated. Meanwhile, the fake appeal for vicarious governing has wreaked havoc in the palace, and the king is suspecting the Crown P…

The King is convinced that the Crown Prince should take his place, just as the appeal requested. However, the Crown Prince realizes that he's been framed and decides to prostrate before the King and ask for reconsiderat…

The special judiciary agency is opened to investigate the Crown Prince's involvement in treacherous plottings. Wi Byeong Joo was being interrogated but is released and takes charge of the treason case. Dal Moon is now w…

Byeong Joo set up a treason case, accusing the son and grandson of two Disciples officials of plotting against the king. The Crown Prince visits Jin Heon privately and asks him to side with him for the time being instea…

Prince Yeoning persuades Min Jin Heon to side with him for the moment and stops the special judiciary agency. Meanwhile, Dal Moon turns out to have been secretly supporting the Crown Prince by trying to extract informat…

Moon Soo and inspectors of Saheonbu arrest Executive Inspector Byeong Joo on charges of murder of Jeong Seok. The king is thinking about what he has done to the Crown Prince and decides to meet with him. Ji Gwang and hi…

Prince Milpoong murders a guard in the court palace, and the guards issue an emergency. The Crown Prince swears to make Prince Milpoong pay for his crimes. Dal Moon tells Yoon Yeong that he had to deceive Prince Milpoon…

Ja Dong is told that there appeared a blood stain in the medical center. Dal Moon tells the Crown Prince that Prince Milpoong looked strange the day he was taken away. The king is suddenly coughing up blood and falls ve…

King Gyeongjong suddenly falls ill, and there are suspicions that Prince Milpoong sneaked into the Royal Infirmary. The Crown Prince stops the royal doctors from giving medicine to the King in case it was poisoned. But …

Moon Soo finds Prince Milpoong in his place of exile and gets him to reveal his plans. He had left a blood mark in the Royal Infirmary so that the Crown Prince would stop the medicine from being given to the King. The p…

King Gyeongjong dies of poisoning, and a rumor spreads that the Crown Prince let him die intentionally. The Chief Justice blames the Crown Prince and objects to his enthronement. The Crown Prince himself questions himse…

The Crown Prince is enthroned with the backing of Queen Dowager. But Lee Geum is surprised to hear that his closest allies decided to resign and leave the palace. The deal was sealed so that the Patriarchs could support…

An unidentified plague starts spreading from the southern provinces, and the capital city is soon affected. The commoners start to blame the king who supposedly killed his brother and took the throne. Prince Milpoong an…

Rumors are spreading that the King will abandon the palace and his people and escape from the plague. The number of plague patients is climbing. Dal Moon and his men discover that the wells could have been poisoned syst…

The king visits the patients at Hwarinseo and consoles them. The riot is prevented. Moon Soo is pursuing Byeong Joo and finds out that he contacted a guard of the Cheongju armory. The king orders a prescription based on…

Yin Jwa and his men are planning on a revolt, and Byeong Joo is helping him. It turns out that their spies are also within the palace walls. The king takes notice and prepares the royal guards to search for the spies. T…

The King's palace finds out that Cheongju Castle has fallen. Prince Milpoong and the rebels convince the people of the provinces that he will bring about a new world. Moon Soo and his men volunteer to fight in the battl…

The King tries to persuade the Chairman to share the palace positions with the Namin in order to weaken the rebels' motivation. The palace doesn't have enough troops, so they have to decide where to place them. Hearing …

The rebels are ambushed by the government troops and are defeated. Prince Milpoong and Yin Jwa, however, manage to getaway. The Chairman agrees with the King to share government positions with the suppressed Namins, whi…

All of the rebels' bases have fallen, and only a few hundred men are remaining. Lee Yin Jwa plans to escape by handing Prince Milpoong over to the royal troops. Meanwhile, Wi Byeong Joo is captured and is punished by la…

Lee Yin Jwa is arrested and brought before the King. Prince Milpoong, however, is still on the run. The King begins to appoint members of the Namin Party to office as he had promised during the revolt. Both the Patriarc…

The senior officials gather Saheonbu soldiers to arrest Lee Yin Jwa’s father-in-law and his family. They protest against the King’s appointment of Namins. Yoon Yeong tries to help Prince Milpoong get away safely to Qing…

King Yeongjo decides to abolish the section chief of personnel. The senior officials are furious. Prince Milpoong walks into the palace himself and kills himself. Inspectors at Saheonbu support the King’s decision. Lee …

King Yeongjo decides to have a public hearing and listen to the difficulties of the people. He promises to reduce tax by half. The nobles are angry that landlords will be compensating for the remaining amount. The dispu…