JUNG HYERI is the definition of good girl or nerd as society calls it.Parties? If you consider an eight year old birthday party then yes,she has been to one.Alcohol?No.Just NO.That drink is her nemesis.But what happens when one day,she accidentally saves one of the bad boy.   Now meet MARK TUAN.He's Jung Hyeri ex-bestfriend well..after he left her for singing.Now what happen if Mark Tuan and his group Got7 co