The television drama takes viewers into the exciting and hectic world of K-pop showbiz. Taekyung is A.N.JELL's arrogant and insufferable lead singer. Guitarist Shinwoo is too perceptive for his own good, and happy-go-lucky drummer Jeremy is just plain slow on the uptake. Into the boy band mix comes A.N.JELL's bumbling newbie, Minam. But what the fans don't know is that he's actually a she! Roped into posing as her twin brother, Minam has to hide her real identity. But secrets have a way of coming out, especially when her bandmates start falling for her!