What did the Jews do? A conversation between a grandfather and granddaughter

In school, during history class, the kids were told about the Holocaust. However, Sofia does not understand how this could happen. Why did this terrible catastrophe occur? But it's good that Sofia has her grandfather — Roberto Finzi, a prominent Italian historian. He surely knows what the Jews did. With this question, Sofia goes to her grandfather. Together, the grandfather and granddaughter walk through the winding roads of the past in an attempt to unravel the mysteries of history.