Dachau opens in 1933 as a camp for political prisoners, and this film traces how that model mutated over twelve years into the extermination machinery of Auschwitz-Birkenau. Historians walk through the Wannsee Conference minutes to show how the Final Solution was formalized on paper, and archaeological footage from digs at Sobibor puts physical remains alongside the documentary record. Survivor testimony threads through the chronology, describing the transition from labor and detention to systematic murder, while the film accounts for the sheer administrative scale involved, noting the network of roughly 42,500 detention sites the Nazis built across occupied Europe. Key architects of the system, including Heinrich Himmler, are examined through their own directives and the bureaucratic paper trail they left behind. The film's structure moves site by site and year by year, treating the camps not as a single fixed institution but as a system that kept escalating, showing how each innovation in cruelty built on the last until mass murder became routine logistics.