First-year high school students Kana, Reimi, and Hibiki are apprentices at the Karasuma Phoniatric Clinic, where the power of healing through song is combined with conventional medicine. One day when the girls' teacher is out, one of the clinic's patients takes a sudden turn for the worse. Is there nothing these apprentices can do to help?
Ah, Mistress! Treasure to the world!
!معلّمتي! كنزٌ للعالم
¡Maestra, es el tesoro del mundo!
¡Maestra, eres el tesoro del mundo!
Ah, maestra! Tesoro del mondo
Oh, mestra! O tesouro do mundo!
Ах, наставница! Достояние мира!