9 years into the future brings Im Yoona to stay still in the entertainment industry, becoming more successful than ever. As the rest of the group has started their new lives, she's stuck living in the past. With no one by her side, she's desperate for a way out.

Yoona, being the daughter of a CEO and a SIS chief , life was exhilerating. Having it all was a blessing, and a privilege, but she desired a challenge. Something that would get the adrenaline rushing through her veins, making her heartbeat faster by the second. Something she continulously longs for.    

Through their busy lives as some of the best idols in Korea, Yoona, Donghae, and Kyuhyun engage in a love triangle. Despite the fact that the two guys are best friends, they still battle it out to win the girl of their dreams. As each of them grow as a person, how will end up with who?    

In a typical university in South Korea, there's always a kingka and queenka. And they're always a couple right? Wrong. Well in this school, Donghae and Yoona hated each other. They wouldn't get along, for unknown reasons. Until one day, their friends set them up on a blind date, with each other. It brings them closer, but with something from their past may hault any futher action.