When a member of top K-pop boy band CNTR disappears before a big performance, newcomer Haneul Kyung, a broke college student steps in and aces the auditions for temporary replacement. Haneul eventually wins the hearts of fans, but continues to clash with the group’s handsome leader, Jiho. But Haneul is actually Hana—the girl who humiliated Jiho in a viral video. Hana tells herself it’s only temporary, but the more she spends time with the crew, and Jiho, the more she starts to feel something new...