Commandant Polgum is caught for betrayal. The chancellors are questioning him but he insists on speaking with the King.
That night, the Crown Prince (he's really the late King's son, not the present King's (Field Marshal's) the two boys were switched during his coronation) reads Polgum's war journal and deduced that he was working with Koguryo and wanted to meet with the King to assassinate him.
On the other hand, Prince Jinmu (the actual son of the Field Marshal/King) is playing around with ladies.
The King told the Crown Prince to find other spies from Koguryo and told him to cooperate with 'the Band,' a group of intelligent spies. He goes to meet with a monk who is part of the organization and gave him three names to investigate.
The King hears of Prince Jinmu's mischief acts and tells the head Eunuch to find him. Prince Jinmu sees him and runs to the Crown Prince for help. He jokes around with him as a real brother and questions whether he is a man since he hasn't been involved with a woman yet. The Crown Prince promises to try to help Jinmu's case.
The Crown Prince later receives a reply from the Band that night.
The Crown Prince then invites all the chancellors for dinner and announces that he found out that one of them was also a spy, communicating with Polgum.
