"That's enough,Hankyung!I can't take this anymore!!" said Jia,looking somewhere else. Hankyung looked straight at Jia's face,trying hard to figure out what is in the mind of the woman in front of him. "That's right. I never liked that trainee doctor since the first time I saw him. He is trying to steal you away from me, Jia!"answered Hankyung, with an angry tone in his voice.  

It's a flashback about Sungmin's story with Sunny,his so-called-besfriend.Sunny had a crush with Sungmin but she never tell him about it.Everything going well until a new student,Jessica, appeared in Sungmin life.Sunny was more heartbreak when her bestfriend,Yuri, started to walk away from her life. watch this: http://www.youtube.com/watch?feature=player_embedded&v=vTOJLiGXI

It's about a girl named Seungyeon,who just broke up with her boyfriend,Junhyung.After an 'ice cream' accident,Eunhyuk,Super Junior dancing machine slowly in love with Seungyeon.So does Seungyeon.But there was a third person who doesn't like the couple.