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...!
While many people are born 
lucky, others are not.
في الوقت الذي يُولَدُ فيه أشخاصٌ محظوظون
هنالِك آخرون غير محظوظين
Den einen wird das Glück in die Wiege gelegt,
die anderen ziehen den schwarzen Peter.
Aunque algunos nacen con
suerte, hay otros que no.
Aunque algunos nacen con
suerte, hay otros que no.
Nel mondo, alcune persone
 nascono sfortunate, mentre altre no.
Enquanto muitas pessoas nascem
 com sorte, outras nascem sem.