[BTS Theories and some ranting] People are just like butterflies , they'll come and leave . Don't chase them as they will come by their own . Don't lock them . They will come back if you were destined to be together .

A story where fans from worldwide came together by a social communication network called 'LINE' make up the female SEVENTEEN since they love SEVENTEEN so much. All of them met in person and went for SEVENTEEN's first concert. What will happen to them during their trainee period and what conflicts will occur?