Ever since Kim Yesung first saw Kim Ryeowook, things were never the same. They soon started dating, their friendship like no other. But all of that changed, when Yesung did the unthinkable. Yesung and Ryeowook were going to get married in a few months, when Ryeowook walked into their room and found something he wished he didn't. What happened? Well, Yesung was caught red handed with Bryan (Leeteuk's little brother) having . It took Yesung FIVE years to gain Ryeowook's love back, but at what price?