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!

I'm on the swim team.
أنا في فريق السباحة
Ich bin in der Schwimm-AG.
Yo tengo natación.
Yo tengo natación.
J’ai un autre club.
Io sono nel club di nuoto.
Eu faço natação.
Я в команде по плаванию.