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Prince comforted Ga-Eun who was in sorrow. 

He felt bitterness that he couldn't reveal the truth before her. He promised to protect her even if he was not seen, giving her a pendant as a mark. 

He told her he would leave her for a while to keep her father's wish. Prince asked her to meet again three days later if she trusts her. 

At night, King told his biological mother that he permitted the prince's plan. Prince also revealed that he had a special heart to Ga-Eun. 

Ga-Eun found the letter from the crown prince that directed her father to investigate Yangsu-cheong. 

She went to the place with a sword shouting that she came to kill the prince and arrested. 

Prince taught Lee-sun in everything of the prince's life. He asked once again to confirm his determination to replace his life under a mask. Lee-sun replied to trust his heart. 

Prince heard Ga-Eun was once arrested and went out to see her. At that moment, the Chief commander brought Lee-sun to King under the crown prince's clothes. The entering ceremony was a day before than the date the prince knew. 

Prince went out to find Ga-Eun who was already released from jail but only found her letter and the pendant he gave. It said she couldn't be with him since his presence reminded her father. She though promised if she could hold her life longer she would like to see him again. 

Lee-sun went to the entering ritual of Pyunsoo instead of the prince. Gon recognized Lee-sun's face but didn't reveal for Hwa-gun. The loyal guard went together to attach Pyunsoo but failed. 

Meanwhile, Ga-Eun and the prince's mother seated at the place. She explained Ga-Eun that her father's death was not because of the prince but because of Pyunsoo. Ga-Eun couldn't accept that. 

At that moment, Dae Mok and his army broke into the palace. He came to punish the King who tried to deceive and kill him. 

Dae Mok said he could be the King since nobody knew the real face of the prince. The loyal guard arrived in King's room to protect the King. 

In prince's mother room, she was already poisoned and about to die. She told Ga-Eun that her real enemy was not the prince but Pyunsoo group. She urged her to find Chun-soo and died. 

Prince found Pyunsoo's army attacking the King and throw himself into the battle. 

Dae Mok figured he was the real prince and attacked him. The King, who was trying to protect his son, was killed first. 

Deputy Magistrate Han was abashed to see her daughter appeared at the execution site. 

Lee-sun told the prince that he could be his substitution to be in Pyunsoo group's entering ritual. At first, the prince thought he wouldn't be helpful but changed his mind. 

Prince asked King to exchange his status and Lee-sun for a while to find a way to beat Pyunsoo. He wanted to see Pyunsoo from the subject's viewpoint. 

King torture him to see if he was a spy of Pyunsoo. It proved Lee-sun was genuine. 

Prince appealed King his plan again. He said it's the call from heaven. 

King refused at first but said he would hear if his prayer knocked the heaven to pour out the rain. At the moment, the rain came. 

Prince visited Dae Mok who was throwing a feast with his followers. Prince challenged Dae Mok in an intense conversation with him. 

Dae Mok was upset that he faced the prince in person, who unveiled different image from what he thought. 

King told Chung Woon to free the prince after meeting Deputy Magistrate Han.

Prince ran straight to the prison to release Deputy Magistrate Han. 

However, Deputy Magistrate Han only left a letter to Ga-Eun to the prince. Prince understood Deputy Magistrate Han's concern for his daughter. He promised Han to come back after moving Ga-Eun to a safe place. Han figured the boy was the crown prince of hearing him calling Chung Woon's name. 

Prince sent Ga-Eun to a safe place. 

Meanwhile, Hwa-gun complained to Dae Mok about blocking her to become the crown princess. Dae Mok advised her to earn it by herself. She then asked him to give her Gon, Dae Mok's best guard. 

Prince returned to Han and begged to flee. 

Han told him that he decided to die for the justice. He encouraged the prince to not fall into despair for this incident but consider it as a lesson for future work. 

Gon, who saw the prince hid Ga-Eun reported that scene to Dae Mok. Dae Mok was pleased to know the news that he found a way to train the prince in his hand. 

Eunuch Chun-Soo who was poisoned by Pyunsoo group delivered Dae Mok's message that the crown prince should be the executor of Han otherwise persons around him will die one by one. The eunuch fell for the poison. 

Prince tried to save his life, but Chun-Soo died. Prince wept aloud. 

Hwa-gun who sneaked into the place with Gon looked down the prince weeping from the ceiling and felt heartbreaking as well. 

On the day of execution, King went to the prince and tried to discipline him. He told this tragedy was the result of the prince's reckless decision without thinking of how great the impact would be to his loyal servants. 

Prince being rebellious to his father cried out that he never wanted a life of the crown prince who had to live with a mask in exchanging of great suffering of his people. Then the prince fainted. 

At the same time, Ga-Eun who opened her father's letter got to know that her father was about to die. She was shocked and headed out to her old house right away. 

Prince woke up at a strange place that was locked. 

Hwa-gun helped him to get away from the room and reached out to the execution ground of Han. 

Han was seated and waited for the time without a word. 

Chung Woon who disguised as the crown prince proceeded the execution in public. 

Ga-Eun was there. 

The prince who arrived late was in shock seeing the scene. 

The crown prince with Chung Woon and Lee Sun are surrounded by Gon and his men. 

Gon misunderstood that Lee Sun was the prince because he was holding the crown prince's jade and it looked like the prince and Chung Woon were protecting Lee Sun. 

The King's guard arrived to save them at the moment Gon to catch Lee Sun. 

At Dae Mok's place, Hwa-gun was asking him to give the prince to her rather than killing him. She told him she would earn the prince's heart. 

Meanwhile, Park Moo-ha and Deputy Magistrate Han were investigating Yangsu-cheong's corruption. However, people are afraid of testifying at the court because of Yangsu-cheong's possible threat. 

They found out Pyunsoo group bought the large size of land and changed waterways to Yangsu-cheong wells. 

An angry crowd upon the unfair death planned to protest against Yangsu bureau. However, Woo Bo stopped them saying it won't make any change but only bring in more death. 

Dae Mok was upset at Gon because he couldn't catch the prince. 

Gon, however, reported that he confirmed the face of the prince who disguised himself as low-class people. 

Dae Mok decided to use the King to remove Deputy Magistrate Han. 

One of his men reminded the King that the worth of Yangsu-cheong was same as the life of the crown prince. He threatened to kill every prince substitutes that the king prepared that night. The crown prince's life is also not safe unless the King kills Deputy Magistrate Han immediately. 

The crown prince returned to the Shrine and met his father. He asked for his favor to look after the unfair death of poor people. 

The King revealed the truth that he was the one gave the right to Pyunsoo group in exchange for the prince's life. 

The prince couldn't accept that he was the collateral with the corruption. 

Deputy Magistrate Han got arrested under the King's order. 

The next morning, Hwa-gun visited Queen to appeal her ambition to become the crown princess. Queen, however, told her that Dae Mok wouldn't allow. Hwa-gun told her she would regret greatly.

The King visited Deputy Magistrate Han in prison secretly. He showed bitter feeling to kill his loyal servant. He said, "Why didn't you wait for a while. You could become a royal servant to the next king."

Deputy Magistrate Han told the King that he would be willing die to protect the prince. He asked for king's favor to protect his daughter and Park Moo-ha. 

The King promised to protect them. 

The prince confined in his room cried for his weakness that cannot save people who are loyal to him and for Ga-Eun who will lose her father because of his mistake.