The Bunker

Late 1944: The remnants of a Panzergrenadier platoon are ambushed by American troops as they retreat toward cover. Private Hugo Engels is killed in the assault. They reach a bunker where they discover Privates Heinrich Mirus and Michael Neumann prepared to defend it.

Night falls as tunnels are found beneath the bunker. Corporal Schenke wants to explore, but Krupp refuses. Mirus slips into the tunnels, followed by Kreuzmann, and when they are discovered missing, Krupp orders the platoon to pursue them.

Neumann is caught in the tunnels and reveals that Mirus had been using the tunnel network as private property for weeks, concealing his activities. The revelation unsettles the command and casts doubt on the true purpose of the tunnel complex. Tension rises as the platoon realizes the intrusion may be deeper than simple incursions.

Corporal Bruno Baumann discovers plans for the tunnel complex, while Corporal Tobias Ebert finds a warning sign. The documents hint at a broadly organized network and possible American presence. The men grow more anxious as the scale of the installation becomes clear.

Inside a mine shaft, Ebert is attacked from behind by a silhouette resembling Kreuzmann. He is gravely wounded, heightening paranoia about who else might be lurking in the tunnels. Krupp orders more cautious exploration.

Baumann concludes there are Americans in the tunnels and uses a generator to turn the lights on in the complex. The illumination reveals more of the labyrinth and confirms intruders may be close. The men brace for further conflict.

Krupp asks Mirus to explain the mysterious activities but is interrupted by machine gun fire in the bunker. Rejoining the platoon, they discover they had been firing at nothing. Cut phone lines convince them Americans are in the tunnels.

The platoon splits up to search the complex, spreading through the tunnel network. The tension mounts as every corridor could hide an enemy. Leadership struggles to maintain control while the men press deeper.

Mirus reveals his belief that his dead son is talking to him about the tunnels. The confession deepens the eerie atmosphere and adds a personal dimension to the danger below. His fixation raises questions about reliability amid the stress.

Schenke and Krupp’s search discovers Ebert's body, confirming that there have been casualties inside the tunnels. The grim discovery heightens the urgency of the mission and the stakes for everyone involved. The group steels themselves for further confrontations.

Another search group discovers a mass grave, and Kreuzmann is found catatonic and incoherent. The macabre discovery hints at past atrocities in the area and worsens the claustrophobic tension. The soldiers brace for the unknown threats still lurking.

Kreuzmann breaks away and encounters Krupp and Schenke; Schenke shoots Kreuzmann dead, and a collapse follows from the gunfire, killing Krupp. The tunnel instability compounds the danger as the unit fights to maintain a path to the surface. The loss tightens the noose around the remaining soldiers.

Heydrich, Baumann, and Franke attempt to blow the bunker door with a stick grenade. Schenke and Neumann mistake the noise for an American attack and prepare to defend the position. They set a demolition charge to ruin the ammunition stockpile and prevent a breach.

In the final confrontation, Heydrich fires a flare pistol at Schenke, who survives the blaze and stabs Heydrich in the ensuing struggle. Baumann and Neumann escape with a violent exchange against Schenke, and a grenade is thrown into the grave, resulting in Schenke’s demise.

Baumann gives Neumann permission to surrender to the Americans; Neumann sets off and discovers Mirus's body entangled in barbed wire. He waves a handkerchief to surrender when he encounters the American soldiers. The encounter marks the end of the tunnel ordeal for the survivors.