Chaegyeong, after making her morning calls to the elders of the royal family, is surprised to see Yool inside the palace. Yool, a transfer student in her class, turns out to be Prince Uiseong. At first, Chaegyeong has a hard time adjusting to life in the palace with its strict education and rules, but thanks to the warmth of the emperor and other elders at the palace she starts to find the royal culture attractive. Meanwhile, Lady Hwayoung prepares to open a yoga center while plotting with Choi against the other royal family members, while Yool gets closer to Chaegyeong and her friends.