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...!
Ma'am, no one told us before the 
entrance exam that our studies
سيّدتي، لم يخبرنا أحدٌ قبل
امتحانات الدّخول بأنّ دراستنا
Sensei. Vor unserer Aufnahmeprüfung
hat uns niemand gesagt,
Profesora, en el examen de ingreso 
nadie me dijo que nos dividirían de esa manera.
Profesora, nadie me dijo que nos dividirían
de esa manera en el examen de ingreso.
Madame, personne ne m’avait avertie
que les classes seraient faites ainsi.
Professoressa, agli esami d'ammissione
 nessuno ci aveva parlato
Sensei, ninguém nos falou antes
 do exame que nossos estudos