Ji Un's good-hearted attempt to make his pupil warm up to people in the palace goes awry. Prince Changun tests Hwi with an intoxicating surprise.

A familiar book on the crown prince's desk baffles Ji-un. Running out of time and the means to save his friends, he asks Hwi for help.

Hwi earns a chance to gain the king's trust during the Ming envoys' visit, but an ill-tempered guest tests the limits of her patience.