Lee Geon (Suho) looked for clues to clear his name. Meanwhile, Choi Myung Yoon (Hong Ye Ji) learns about her father's malicious reality in "Missing Crown Prince" episode 10.

'Missing Crown Prince' Episode 10: Lee Geon Plans for Counterattack Against His Enemies

Lee Geon arrived in Hanyang and met the followers of his grandfather, Hyeon Mok (Nam Gyeong Eup). When he heard that a ceremony for Prince Do Seong (Kim Min Gyu) was set, he accelerated his plan to launch a counterattack.

Afterward, Lee Geon met the doctor who had treated Hae Jong (Jeon Jin Oh), whom he had heard about from Han Sang Soo, an internal officer of the royal palace. It was then he found out that Choi Sang Rok (Kim Ju Hun) used an antidote to poison someone.

Accordingly, Lee Geon disguised himself as an assassin and sneaked into Sang Rok's house to find the antidote, but failed to find it. He returned after secretly looking at Choi Myung Yoon (Hong Ye Ji), whom he had just seen, with sad eyes.

As he was struggling to find a solution to the situation, Lee Geon got angry when he heard that Left Councilor Yoon I Gyeom resigned and that Choi Myung Yoon's wedding ceremony would be held at the Crown Prince's investiture ceremony.

Lee Gun Recruits Yoon I Gyeom for His Planned Revenge

Elsewhere, Han Sang Su brought the court lady, who had told Lee Geon about the secret affair between Queen Min Soo Ryun (Myung Se Bin) and Choi Sang Rok, and told the shocking news that Lady Kimisang who was said to have died after poisoning was alive.

Meanwhile, Lee Geon and Gap Seok dug up Lady Kimisang's grave and found out that the coffin was empty, through the story of the old man weaving the coffin, he was convinced that Min Soo Ryun and Sang Rok had taken Lady Kimisang out.

Lee Geon tried his best to look for Kimisang's hiding place, but gave up and requested to ask for help. He went to Yoon I Gyeom while in disguise as an assassin.

He then took out the slave documents stolen from Jang Yewon, the government officer in charge of document management and lawsuits. He made a request to Gyeom. As Lee Geon launched a plan to recruit Gyeom, who was one of the axes of evil deeds, expectations for an all-time cider counterattack exploded.

Choi Myung Yoon Discovers Choi Sang Rok's Evil Deeds

On the other hand, Soo Ryun visited Sang Rok who was shot while saving her. She promised to protect him and the next day, he directly presided over a coordination meeting, held responsibility for the situation, and demoted all of Yoon I Gyeom's people to important positions.

In addition, Choi Myung Yoon's wedding to Prince Do Seong was announced. Despite the opposition from the ministers, Min Soo Ryun stood still and made sure that the wedding would happen.

Choi Myung Yoon then entered the palace to prepare for the wedding. She saw Choi Sang Rok, her father suddenly enter and take refuge.

Myung Yoon was secretly spying on her father who was watching Haejong. And that's when she discovered the devastating truth about her father's identity at the palace.

For more K-Drama, K-Movie, and celebrity news and updates, keep your tabs open here at Kdramastars.

Kdramastars owns this article.

Shai San Miguel wrote this.