Royal Physician Choi kidnaps a young man to use him to get rid of Myung Woon's misfortune. However, the young man turns out to be the Crown Prince. Myung Woon secretly saves the Crown Prince and takes him back to the palace safely. Meanwhile, the Queen Dowager demands the King to give up on the Crown Prince, saying he could lose his throne if he doesn't.

The Crown Prince makes it out of the palace with Gap Seok's help, and they meet Myung Yoon, who is waiting outside the palace. Myung Yoon helps to heal the prince's stab wound. The King orders Prince Dosung to find out the owner of the needle canister. Meanwhile, Physician Heo Jin Soo is found dead in his house.

Prince Dosung discovers that his grandfather, the Left State Councillor, joined hands with the Queen Dowager and gets infuriated. The Crown Prince meets Prince Dosung secretly and tells him about Queen Dowager's secret affair and who her secret lover is. Meanwhile, Queen Dowager meets the Queen and asks for her help dealing with the King.