Christiane dies two days later: she outlives the GDR, passing away three days after full official German reunification.
Alex, Ariane, Lara, Denis, and Robert scatter her ashes in the wind using an old toy rocket Alex made with his father during his childhood.
The film score was composed by Yann Tiersen, except the version of "Summer 78" sung by Claire Pichet.
Stylistically, the music is very similar to Tiersen's earlier work on the soundtrack to Amélie.
Alexander lived his whole life with this barrier; therefore the drastic change was hard for him unlike his sister Ariane.While visiting his mother in the hospital, Alex encounters the girl he met in the demonstration, Lara, a nurse from the Soviet Union who is now caring for his mother.Alex and Lara soon begin dating and develop a close bond.In his absence, Christiane has become an ardent supporter of the ruling Socialist Unity Party of Germany (the Party).On the other hand, Alex takes part in an anti-government demonstration.
Most scenes were shot at the Karl-Marx-Allee in Berlin and around Plattenbauten near Alexanderplatz.