Sungmin and Kyuhyun are dating for...like...forever! But when Kyuhyun promised Sungmin that he won't leave Sungmin alone he broke it when it was May, Sungmin noticed that he saw Kyuhyun with somebody what will Sungmin do?
The story about two people in love, Sunghwa never in love with anyone until she met Kyung Soo. They're in love like there's no tomorrow. Until, the third person appeared to separated them. Will they still remain?