They're talented, good-looking and falling in love.
Han Jae-Wook is the SBG member who most personifies duality. On stage, Wook is a powerful singer and sexy dancer, a handsome guy whose long legs and beautiful voice make fangirls swoon. But get him off stage and he's the quietest, shyest member of one of South Korea's biggest bands. And for months he's had a secret crush on a barista who works in the coffee shop located in the same building as SBG's dorm, but he's barely been able to talk to her beyond placing his frequent tea orders.
Ki Min-Ah has been a fan of Wook's for the entirety of SBG's history, but she doesn't let even a hint of that slip when he comes into Tower Coffee and Bakery. So when he starts talking to her more, making overtures of friendship, she's stunned. But she's willing to bury the fangirl part of herself and be his friend because she gathers that it's difficult for him and other idols to make real friends other than other entertainers. But she has to keep their budding friendship secret so she doesn't endanger her job since there is a policy of no interaction with idols other than professionally. And she can't afford to lose her job when she's the sole support for her three younger siblings.
But when it's exposed they have been spending time together, they must weather fan suspicion that she's just after his money and fame as they also realize they both want to be more than friends.