Officials in Nazi Germany demand that the Bulgarian government begin rounding up all 50,000 of its Jewish citizens and send them to Poland. Not only is there relatively little anti-Semitism in Bulgaria, but Jews have long been respected members of Bulgarian society.
They are not treated as outsiders and foreigners in their own nation. So the leaders of Bulgarian society resist the order — including Bulgaria's leader, Tsar Boris III, vice-chairman of the Bulgarian parliament, Dimitar Peshev, and head of the Bulgarian Orthodox Church, Archbishop Stefan.
Because of these three men, a strong cultural, political, and social resistance to the Nazi demands is created. At the end of the World War II, Bulgaria has about as many Jews as when the war started, which means that Bulgaria is essentially able to protect its entire Jewish population by standing up to Hitler and the Nazis. Only Denmark comes close to saving as many.
One interesting aspect of this is that Boris III makes inquiries about whether it would be possible to send Bulgaria's Jews to Palestine instead of Poland. This makes little sense unless he and others know — or at least very strongly suspect — that being transported to Poland is a death sentence.
The Nazis are only willing to consider the plan in exchange for large amounts of money, which helps reinforce the conclusion that the goal for the Nazis is not simply the removal of Jews from Europe, but the extermination of Jews from the face of the Earth.