Lee Hyukjae(Eunhyuk) and Lee Donghae are best friends, they treat each other as brothers. Each has his own relationship, and both of them support each other. but they always have problems, especially Eunhyuk, who has so many failed relationships. and when it happened again he breaks down, but his Best friend, Donghae is there to comfort him. and Donghae, who has the almost perfect girlfriend can't seem to find happiness in the realtionship, their relationship becomes a rocky road. then Eunhyuk discovers he's in love with his best friend? How will these two end up together?