Joohyun didn't know how to confess her feelings for her best friend who is also a well-known idol, Kang Seulgi. She sought another way to find out about Seulgi's feelings and the possiblity for her feelings to be reciprocrated through the radio station where Seulgi worked as a DJ. The decision whether Irene can confess her feelings of keep it hidden forever shall rely on Seulgi's advice during her airtime.