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.

Michael Fuith
as Michael

Theo Trebs
as Harper

Anka Graczyk
as Gabi

Emily Cox
as Anita

Katelijne Philips-Lebon
as Heike

Steffen Münster
as Klaus

Andreas Schröders
as Ulf

Harald Geil
as Thorsten

Brigitte Kren
as Frau Bramkamp

Sebastian Achilles
as Kai