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...!
This is lousy luck to be having 
on the first day of school.
حدوث هذا في اليوم الأوّل من المدرسة ناجم عن حظٍّ سيئ
Und bereits am ersten Schultag
werde ich vom Unglück heimgesucht.
Vaya primer día más desafortunado.
Vaya primer día más desafortunado.
Quelle poisse,
le jour de la rentrée !
Bella sfortuna mi è capitata 
al primo giorno di scuola.
Mas que falta de sorte,
 logo no primeiro dia de aula.