After having seen over 200+ movies and shows about the second world war, I have actually never seen what this movie so clearly shows... During the peak of warfare - i.e. As of 1942 - many german men already perished at the eastern front or are still on active duty in some non-german country. So, that basically leaves many german cities with a lot more women than men. And as a young adult single male, residing in a large city like Frankfurt must have gathered a lot of attention from the female counterpart. And that's regardless of the women being single or married, with their husband serving in the army or SS.
Based on true events, this movie is about life as a non-german "foreigner" in Frankfurt. It shows how german people see relationships with non-germans. A showcase of not only german discrimination, but even more so the cruel practices of the SS (Gestapo), it makes one aware of how evil humanity can be to its own kind.
A combination of very good acting and some very convincing movie sets of the 1940's era, the movie "transports" the viewer to Frankfurt during WW2.
Overall, this movie deserves a score of 7.4/10, just barely missing the point where it would have received an 8-star IMDb rating.