Jin Hee is the daughter of a chaebol family and she attends one of Seoul's elite high schools: 'Seungri High School'. Being a chaebol heiress has its pros and cons, Jin Hee can afford everything she wants but her parents make all the decisions in her life like what subject she's going to study at university, which free-time activities she's allowed to do and the most important one: who she's going to be married to. Jin Hee was born to carry on the family business but now that she's old enough to take her own decisions, will she still blindly follow her parents? But first of all she needs to ace an elite high school which means surviving in the cruel world of spoilt teenagers and bullies while also getting the best grades to get into a foreign university. And then there are also Kris, Kai and Kyungsoo who each give her a heart attack in completely different ways.