Tenshi, Ei-chan, and Shiratori all attend Kawagoe Academy. One day, they get pulled into the orbit of former conductor Haruo. He drags them into his newly founded boys choir where they suddenly find themselves performing a song in front of an audience!

What'd you want to see me for, Grandma?
لمَ أردتِ رؤيتي يا جدّتي؟
¿Querías verme, abuela?
¿Querías verme, abuela?
Tu veux quoi, la vieille ?
Nonnina, che cosa vuoi?
Vovó, o que você quer comigo?
Бабушка, ты чего хотела?