Suzy and Myungsoo are childhood friend , They always go to school together , play together , study together , and they almost just like Brother and sister . one day ,when they grew up , Suzy say if we have fallen in love , we should share it and tell it , and they promised with their pinky finger .but ,Their Friendship isn't doing work so well as they growing up .because there's a new student from Caliornia , and she's Jessica jung is child . her name is Jiyeon , when she's come to the new school ,she's scared so she go to the infirmary to calm herself down  . and Myungsoo also in there because his head is hurt , and then suddenly Jiyeon fall in love for the first sight to Myungsoo .

                                       What will happen ? Who's the one that Myungsoo like ? who's the one that Suzy like ?

Bae Suzy - she's kind but selfish and stubborn 

             - her favorite actress is Jessica jung 

             -Member of the cheerleading club 

Kim Myungsoo - he's cold ,reserved , but talented and smart 

                    -member of the photography club 

jung Jiyeon - She's Shy,smart and beautiful 

                -member of photography club