Once a legendary diva who ruled the stage with overwhelming charisma, Yeonjeong (66) has been in seclusion since fleeing mid-performance a year ago. Her body is aging, but her hypersensitive ears still drive her mad. Two years ago, Jina (30) lost her lover in the Itaewon tragedy and gave up her guitar. Now, she works as a top-tier housekeeper. As one aide after another quits under Yeonjeong's sharp temperament, ace-level Jina steps in. From day one, the two clash—fiercely and hilariously. Then, in a dusty storage room, Jina finds a long-abandoned Gibson guitar… and something begins to stir.