THE IDOLM@STER CINDERELLA GIRLS U149 S1 E12 - What can't be seen when it's bright out, but can be seen when it's nighttime?

THE IDOLM@STER CINDERELLA GIRLS U149

THE IDOLM@STER CINDERELLA GIRLS U149 S1 E12 - What can't be seen when it's bright out, but can be seen when it's nighttime?
8.2

The senior idols will have a great concert, but the U149 girls won't be able to participate! Can an unusual encounter change this desolate scenario? And if it changes, will everyone be able to get the new idol group on stage in time?!