The Call of Duty: Black Ops Cold War Zombies storyline is about to enter an explosive new chapter with the Mauer der Toten map, releasing as a free update for all owners of the game on the 15th of July, alongside the Season 4 midseason update.
The Dark Aether story takes a new turn as players fight their way through an infected Berlin.
Mauer der Toten, meaning "wall of the dead", is set in a decrepit and ruined version of East Berlin - uhh, more decrepit and ruined than the actual East Berlin was under Soviet occupation, mind - which has been overrun by the undead following a Dark Aether outbreak.
The wall in the map's title, naturally, refers to the Berlin wall that stood back when the country and city were divided between socialist and capitalist sides.
The Zombies experience is getting a kick into gear both on the gameplay side of things and the narrative. The tables have turned, and enemies are forced to work together as a traitor in Requiem ranks unleashes the worst Dark Aether threat. Omega Group's leader, Kravchenko, has Requiem agents captured - but instead of executing them, he presses them into service in exchange for their freedom.
The mission?
Find and kill Samantha Maxis who apparently turned traitor. Allegedly, Maxis is responsible for the outbreak in Berlin where a new kind of portal threatens to unleash an undead threat on the world far greater than any of the previous outbreaks, and has caused new, deadlier Dark Aether creatures to cross over as well. However, based on how twisty and turny Zombies plots usually are, we're certain there is more than meets the eye here.

