This movie is about a group of teenagers from different places. Teenagers with the same dream of music participated in the audition for happy male voices and lost their idols. Baggage of youth events. 12 teenagers from different places with different personalities have gone through an extraordinary and short summer on the draft road and experienced many things. In order to transform themselves, they worked hard to change themselves, and practiced hard day and night only to be able to step onto a bigger stage one day. In just 150 days, I experienced the changes of youth full of positive energy and cruelty. The film fully shows that they are no longer burdened by their idols, they will not feel confused when facing difficulties, they will go forward bravely, work hard to overcome difficulties and finally go to a bigger stage, they will not face the negation of the adult world, and they will not be angry , will not be rebellious, they just want to be recognized by others, and become a group of ordinary, ordinary and real young idols, what will happen to them next..