From an early age, Arnold believes he is an extraterrestrial. Day in, day out, he is busy trying to build a flying machine that will finally take him "home". Protected by his mother Ida and her long-time admirer, the country doctor Emil, he is regarded as a quirky but lovable outsider in his home village.
Max Riemelt
as Arnold
Katja Riemann
as Ida
Armin Rohde
as Emil
Anneke Kim Sarnau
as Wanda
Dietmar Mues
as Professor Borgmann
Hardi Sturm
as Pförtner
Charly Hübner
as Pfleger Raffael
Sonia Serrano
as Isa
