On the day of the Tennomifune Academy entrance ceremony, in the class 1-7 classroom, Hanakoizumi Anne (Hanako), Hibarigaoka Ruri (Hibar), and Kumegawa Botan (Botan) are told by their homeroom teacher Kodaira-sensei that they are unfortunate and unhappy students.
The goal of the students of class 1-7, who are burdened by a variety of forms of misfortune, is to become happy.
The three girls have trouble accepting their circumstances, but they're immediately given an unexpected assignment...!
Now, let's change seats before 
we start today's measurement.
والآن لنغيّر توزيعكن على المقاعد
قبل أن نبدأ بقياساتِ اليوم
Tauschen wir zuerst die Plätze, bevor wir
mit den heutigen Messungen beginnen.
Pero antes de comenzar con la medición
de hoy, tendrán que cambiar de asiento.
Pero antes de comenzar con la medición
de hoy, tendréis que cambiar de asiento.
Vous allez changer de place
Ora eseguiremo la misurazione giornaliera 
ed allo stesso tempo cambieremo i posti in classe.
Agora, vamos mudar de lugar antes 
de começarmos a medição de hoje.