James O'Donnell, James Naughton, an American correspondent, gains entry to the dark, flooded Führerbunker by bribing a Soviet sentry with a packet of cigarettes. The film then shifts into an extended flashback covering January through May 1945, tracing life inside the bunker as Berlin is encircled and the regime unravels.
Inside, the atmosphere is tense and claustrophobic, as power struggles and loyalties are tested under the weight of impending collapse. Adolf Hitler, Anthony Hopkins, presides over the dwindling empire from his underground room, issuing last-ditch orders and weighing final gambles as the world above swirls toward defeat. Magda Goebbels, Piper Laurie, Joseph Goebbels, Cliff Gorman, and the other bunker residents navigate a maze of fear, paranoia, and fractured loyalties while rumors of surrender and retreat circulate.
Albert Speer, Richard Jordan, tries to steer Hitler away from total ruin and even schemes to sabotage the scorched-earth policy, arguing for a more calculated retreat or exit strategy. His plan to kill Hitler inside the bunker flares briefly but comes to nothing, leaving Speer to watch as the regime stumbles toward collapse.
Tensions peak as Hitler dismisses Gen. Hans Guderian, Yves Brainville, and as he orders the purge of top figures like Heinrich Himmler, Michael Sheard, and Hermann Goering, David King. The military situation deteriorates, and the defenders fail to lift the siege of Berlin, even as the pressure inside the bunker grows heavier by the day.
The personal becomes heartbreaking as Magda Goebbels and the Goebbels children are forced into the brutal realities of a collapsing regime, while Eva Braun, Susan Blakely, shares a private, fragile bond with Hitler that culminates in a wartime wedding—a stark, intimate moment that sits at odds with the world’s ruin outside. The film also moves through the deeply painful choices faced by other inhabitants as the end approaches, including the deaths that soon follow.
Hitler and Braun eventually take their own lives, and the Goebbels family follows in a series of suicides that seal the fate of many inside the bunker. The narrative then turns to the aftermath outside the bunker’s walls, where groups of survivors begin to emerge from the Reich Chancellery complex.
The final occupant of the bunker, Johannes Hentschel, Martin Jarvis, is left to witness the closing collapse. He listens to a radio announcement that Hitler has died fighting and, in a moment of furious disgust, tosses a set of papers at the device. The sequence dissolves into a series of still images accompanied by voiceover explaining the fates of those who remained. The closing still shows Hitler delivering a speech from his rise to power, and the scene fades as O'Donnell’s narration echoes over the ruined bunker and the credits roll.