"What would happen if we....." That was the last words Mi Sun heard from Myung Soo, before they got separated. She loved him...He didn't know. That was 9 years ago. Now, Mi Sun is back from the States to Seoul with a great new life. She has a friends that support her and a family that love her. The memories of them are still kept accept about him. It disappeared like bubble. When she tries to remember, its blur. Until one day, she saw a group name Infinite, thats when they met again. Will