The mysterious and handsome Jeong Jiha appears out of nowhere. And as if to keep him in check, the precious older brother who’s always been by her side—Cheon Woojin—starts getting even closer. Caught in the middle of both their affections, Miu finds herself overwhelmed. And yet, the closer Jiha gets, the more her heart aches for some reason, and she can't stop thinking about him... Between swaying emotions, long-hidden secrets begin to surface. What fate awaits these three as they’re swept into the whirlwind?