Jung Soojung and Kang Minhyuk have been friends ever since their first encounter in middle school. Ever since then, they've been inseperable. Wherever they go, they always go as a pair making others to suspect them as a couple. But really, their feelings for each other are merely friendly - or is it? As years go by and they're finally starting their life in Seoul University together, things become more complicated when two other figures enter into their lives. 

Enter Kim Myungsoo the handsome and cold guy who captures almost every girl's heart. He has almost all of the attention, but a certain girl constantly gets on his nerves. Jung Soojung. The more he spends time with her, the more he opens his heart to her. Inside that cold facade he always plasters, is just a dorky little kid.

Kim Yoonhye, the girl with the never-ending poker face, soon meets up with a guy named Kang Minhyuk who voluntarily gives himself a mission to get the stoic girl to smile and open up to him. As much as she wanted to resist, her heart tells her otherwise. 

As Soojung and Minhyuk slowly grow distant to one another, will their hearts yearn for one another or for someone new instead?