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...!
Okay! Good girls!
!حسناً! فتيات مهذّبات
Fein! Brave Mädchen!
¡Bien! ¡Qué buenas niñas!
¡Bien! ¡Buenas chicas!
C’est bien, vous êtes sages !
Benissimo! Siete proprio delle brave ragazze!
Certo! Boas meninas!