Yang Song I is a nice girl with a short temper. She was tricked and
humiliated by her best friend Eun Hee Won as a child. From then on, people perceived Song I as a bad person, while praising Hee Won as a
princess. When Song I is unemployed as an adult, Hee Won recommends her to the amusement park that she is in charge of. There she
finds her childhood friend and ex-crush Kim Hyeon Seong, who Hee Won "stole" when they were kids.
Even as adults, Hee Won humiliates Song I at every chance she gets. To get
even, Hee Won decides to break the park's latest train and frame Hee Won. As
the train catches fire, Song I realizes that Kang Seung Joon, the son of the
park's president, is on the train and she then attempts to save him.
Misunderstanding the whole situation, Seung Joon falls in love with Song I
for her brave spirit and charming attitude. Meanwhile, Kim Hyeon Seong
begins to see Yang Song I in a new light.
