Saku, Sosuke, and Uta try to figure out a way to make money so Saku can go on the school trip with them. They make a song but it doesn't seem to be getting enough attention, so Kakeru helps them make a PV for the song to help promote it.
Those are just the guys from
the Singing Club who bought the song.
هؤلاء  المُشترون هم أعضاء
 .نادي الغناء فقط