Hanni and Nanni are not only sisters, but also best friends. The twins are inseparable and always up to something. When they cause a wild chase through a department store, their wealthy parents have had it: They send the girls to the posh boarding school Lindenhof in order to teach them some manners. While sweet-tempered Nanni quickly makes new friends, the impulsive Hanni has a hard time accustoming herself.
Sophia Münster
as Hanni Sullivan
Jana Münster
as Nanni Sullivan
Hannelore Elsner
as Principal Theobald
Heino Ferch
as Georg Sullivan
Anja Kling
as Julie Sullivan
Katharina Thalbach
as Mademoiselle Bertoux
Suzanne von Borsody
as Mrs. Mägerlein
Oliver Pocher
as Rüdiger Hack
Sunnyi Melles
as Erika's Mother
Zoe Thurau
as Jenny
Aleen Jana Kötter
as Erika
Lisa Vicari
as Suse
