A story about a poor girl who got a chance to disguise herself as a rich student in an upper-class high school in Seoul. On her way, she met with the two most wanted guys from the school's swimming team. But what she didn't knew was, disguising as someone else wasn't as easy as she thought, especially being someone who was going to be the 'fiance' of Gangnam High's hearttrob -- Oh Sehun. As time goes by, a lot of things wasn't what she thought of, what obstacles will she face ? Will her real identity be exposed ? What is the truth?

; her♥

"I don't care if anything happens, no matter what it takes, to throw this old life of mine away, I'll do it."

"Please to meet you, my name is Park Mi... , Irene Park, you can call me Min Hee."

"The taste of chocolate reminds me of someone."

"Sorry, but I'm in love with you."

"Who am I for real?"

; him♥

"Same old school, same old people, but she's never there."

"She's just the same as other girls in school."

"I never eat chocolate."

"I'm not the kind of guy you think I am."

"It's all my fault."