Guerra Korea-Khitan War

Queen Dowager Cheonchu wishes her own son to become the next crown prince. However, Mokjong is not happy with how Kim Chi Yang, the Right Senior Executive, and Queen Dowager are trying to take over his place as he is determined to succeed the throne to King Taejo's descendant. Therefore, Mokjong is about to summon Prince Daeryangwon back to the palace, while Kim Chi Yang and Queen Dowager secretly send assassins to murder him.

Court Lady Choi threatens Prince Daeryangwon to take the food Queen Dawager has prepared for him. Prince Daeryangwon quickly runs away from the temple and hides himself in Mount Samgak. Court Lady Choi orders the men to burn down the mountain to find him. Meanwhile, Mokjong holds a banquet for his people, and Kim Chi Yang plots a crime for the night.

Kang Jo, Northwest Temporary Government Officer, sets off for Gaegyeong with a crucial mission. However, deep within his thoughts, he grapples with the realization that Goryeo's very existence is at stake if the current state of ruling persists. Meanwhile, in another part of the kingdom, Prince Daeryangwon anxiously awaits assistance from His Majesty. To his surprise, he finds himself confronted with an entirely new chapter of life, carefully orchestrated for him.

Caught in the crossfire between those gearing up for war and those working to prevent it, the puppet king, Wang Sun, and Kang Gam Chan form the front line of those seeking to avert conflict. On the opposing side, Kang Jo believes in the inevitability of war and sees it as a chance to eradicate the Khitans. The turning point comes when envoys from Khitan arrive with a message poised to alter the course of history.

The ministers struggle to dissuade the Khitan envoys as Prince Daeryangwon expected. He believes that Khitan is using the Palace Head Secretary's treason to justify the war. Therefore, Prince Daeryangwon summons Kang Jo alone to his chamber at night to get rid of him.

Details The battle between Goryeo and Khitan begins in the middle of the night, and the people of Goryeo shiver with fear. With 400,000 soldiers, Khitan attacks Heunghwajin for seven days straight, but they are unable to destroy the fortress. Therefore, they come up with another strategy. Meanwhile, Prince Daeryangwon visits the temple where people are gathered to pray.

The Emperor of Khitan is infuriated as he loses the first conquest expedition he is leading. He starts advancing south with his army towards Samsuchae to destroy Goryeo's main force. Therefore, even though Officer Yang manages to defeat Khitan soldiers, the main force assumes Heunghwajin has lost the battle as they are trapped. Officer Yang must find a way to send the word.

The spearhead commander of the Khitan army launches an attack and captures Kang Jo. The emperor of Khitan threatens Kang Jo and the captured generals to become vassals of Khitan. Meanwhile, Hyeonjong receives the news that the Goryeo army was defeated, and Deputy Minister Kang advises him not to share the news with the people.