Synopsis

Mookhyang unveils his scheme to use a captured spy as a double agent, and surprisingly recruits the assassin sent to kill him by promising a way to continually target him without repercussions. Simultaneously, the defenses of the Hundred-Thousand Great Mountains, long considered unbreakable, are breached by an unidentified force, causing alarm within the Demon Clan's leadership. This leads to a confrontation where Mookhyang makes his presence known to Vice Leader Ingeol Jang, marking the beginning of their renewed conflict.