A Doomed Girl Group's Do-Over summary: Solo idol Baek Nokha sees her world crumble the day her mother dies while she's busy accepting an award. So, when a strange creature offers her a second chance, she accepts readily. But she never imagined she'd have to restart from the bottom as Yoon Chung, a trainee in an idol competition show! To see her mother again, she has to grant Chung's wish of debuting in first place. Armed with nothing but her voice and her knowledge of the industry, can this superstar climb her way back to the top?