On the turn of the 20th century, in Netherlands, three socialist activists and brothers are imprisoned for a crime they didn't commit. The prosecutor tries to get to the truth, but their comrades and others betray them.

Otto, a Jewish refugee who managed to escape from Berlin in the early days of WW2, is now the owner of an Amsterdam ice cream parlor. Otto's place soon becomes a microcosm of the city with its German invaders, Dutch collaborators and anti-fascist resistance groups.