In the year 2020, Big Hit will release a new girl group, many years after GLAM. Will they be a success or a flop? With the help of their seniors, BTS, the 7 member group, ZONA conquered the industry by storm. Their seniors, BTS mentored them through "3-month-training with Bangtan" a YouTube documentary of the girls' training. In that short period, they were able to enhance their skills in performing and even in making their own music. The two groups captured the hearts of their fans with their adorable sibling-kind of relationship which broke the stereotyping of the public regarding the male-female friendship among idols. But will they be able to keep this clean image? What will the girls encounter on their journey to stardom?