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...!
so you can overcome your 
misfortune and become happy.
وذلك كي تتمكّنّ من التغلُّبِ على سوء حظّكن
وتُصبِحن سعيدات
damit ihr euer Unglück überwinden
und glücklich werden könnt.
para que superen su infortunio
y encuentren la felicidad.
para que superéis el infortunio
y encontréis la felicidad.
c’est pour surmonter
cette malchance
di modo che possiate superare 
la vostra sfortuna ed essere felici.
para poderem superar 
sua má sorte e serem felizes.