While on a mission for his father, Wang So is kidnapped by Shin Yool, who must use Wang So as a stand-in husband to avoid marrying a local brute

Wang So travels to Goryeo to find her temporary husband. Wang So, fulfilling the last wishes of his father, marries prominent Princess Hwang Bo Yeo Won and sets off to find his father's assassins

Wang So uncovers the secret behind the murder of his father and begins moving against those who wronged his family. His brother Taejo Wang Gun attempts to find out who is punishing their father's killers

Wang So attempts to discover the secret behind his drinking companion Gae Bong and whether or not he can help his campaign to avenge his father, while Jung Jong attempts to assert his weak authority

Wang So goes undercover at Jung Hae Sang Dan in order to find a key piece of evidence for his quest, but first he must prove he can put in an honest day of work

As Wang So's time at Jung Hae Sang Dan comes to a close, he finds himself one step closer to solving his mystery. Meanwhile, a competition among the princes is to be arranged, in order to name a new Crown Prince.