When lovelorn Michael arrives in Berlin to return a set of keys to his ex-girlfriend, Gabi, as an excuse to see her again, he finds her apartment empty save for a couple of plumbers making repairs to the central heating. Just as Michael learns from the plumber’s apprentice, Harper, that Gabi has popped out for a while but will return soon, the apprentice is attacked by his boss who has unexpectedly and inexplicably transformed into a raging madman. Together, Michael and Harper manage to bundle the crazed plumber out of the apartment and barricade themselves safely inside. Within minutes, they find themselves trapped in apartment block under siege from a horde of similarly insane people, apparently hungry for human flesh.
Unfortunately the movie Rammbock: Berlin Undead is not yet available on HBO Max.
| Directing | Marvin Kren | Director |
| Writing | Benjamin Hessler | Screenplay |
| Editing | Katharina Dufner | Editor |
| Production | Melanie Berke | Executive Producer |
| Production | Sigrid Hoerner | Producer |
| Production | Kathrin Krückeberg | Production Director |
| Camera | Moritz Schultheiß | Camera Operator |
| Lighting | Jens Mackeldey | Lighting Manager |
| Sound | David Hilgers | Sound Designer |
| Art | Ulrich Frommhold | Production Design |
| Costume & Make-Up | Jennifer Mäurer | Costume Design |
| Costume & Make-Up | Stefan von Essen | Makeup Artist |
| Costume & Make-Up | Nicole Koch | Makeup Artist |
| Costume & Make-Up | Susanne Knebel | Makeup Artist |
| Crew | Jean Marc Lebon | Choreographer |
| Crew | Katelijne Philips-Lebon | Choreographer |
| Production | Carmen Loley | Casting |
| Production | Markus Schleinzer | Casting |
| Editing | Silke Olthoff | Editor |
| Visual Effects | Norman Struwe | Visual Effects |
| Sound | Hanse Warns | Sound Designer |
| Sound | Markus Stemler | Sound Designer |
| Sound | Marco Dreckkötter | Music |
| Sound | Stefan Will | Music |
