Ruler: Master of the Mask Episode 8

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.