Moonbyul was a normal Bartender at the most prestigas hotel in Seoul Korea, the White Wind. After a breakup, a heartbroken Moonbyul only sees in black and white, that is until one day she becomes captivated by Kim Yongsun, an idol from the group Mamamoo. To the owner Hwasa, Byul's best friend, she's just another customer, except, to Byul she becomes her dream, and the person that Byul desperately wants to be the one to.