So-Ssang (Kim Sae-Ron) has been a court lady for the past 14 years. One day, she learns something about Kwon-Min (Seo Eun-Young), who is the concubine of Crown Prince Yi Hyang. Meanwhile, Kwon-Min wants to be the only person loved by Crown Prince Yi Hyang. For that, Kwon-Min needs to oust Crown Prince Yi Hyang’s wife Bong-Sun (Jung Da-Eun). So-Ssang is given a mission by Kwon-Min. Her assignment is to oust Bong-Sun. - AsianWiki
Today is righteous Chae-young’s first day of her transferred school after beaten a bully to nothing. Despite the dad’s warning, she saves her classmate Jong-gu from bullies again. Fascinated by her, Jong-gu asks how to be strong like her.
Ja-yoon is a high school student who struggles with memory loss after she endured some unknown trauma during her childhood. While trying to uncover the truth, she is unwittingly dragged into a world of crime and finds herself on a journey that will awaken many secrets hidden deep within.
