Do you know what quantum physics involves? The thought experiment of Schrödinger's cat is a good way to understand the basic premise.

Gersdorff attempts to convince various high-ranking officials to join their plan, but not everyone believes that a coup would be the best solution for Germany.

While their classmates in the West graduate, Rüdiger and Christian come to terms with their life in the East Berlin.

This video uses virtual reality technology to allow viewers to experience the power of a volcano close-up.

Germany is under attack and time is of the essence, but it is difficult to find co-conspirators. When Claus Schenk Graf von Stauffenberg returns to Berlin, it seems possible that they have found a potential source of help.

Rüdiger finds himself in prison, subject to interrogation, and separated from his sister.

What must come after the assassination? Stauffenberg and Gersdorff discuss their strategies and their doubts.

While Rüdiger and Bärbel face the consequences of their actions, the other former classmates move on in more positive ways.

Claus Schenk Graf von Stauffenberg recruits Axel von dem Bussche, a young captain haunted by Nazi atrocities he has witnessed, as Hitler's so-called "European Fortress" begins to crumble.

Christian considers a dangerous escape plan.

Stauffenberg begins to consider whether to attempt the assassination of Hitler on his own.

Christian escapes by swimming across the border, but leaves Heidi behind. Rüdiger is suddenly presented with a new option.

More missed opportunities to stage an attempt on Hitler's life lead to confusion and suspicion.

In the conclusion of the film, find out whether Rüdiger leaves West Germany, and what each person in the group is doing today.

Stauffenberg is only able to smuggle one of the bombs into the meeting and asks to be seated close to Hitler.