'I will destroy them all!'

[BenHR]

So here's what I think the general plot for this map is.

Takeo, Dempsey, Nikolai and Samantha all want to destroy Group 935, and probably also stop the whole zombie thing. They know that the teleporters can also go through time, so they try and hack one teleporter on the Moon to bring 'em back to when 935 was just starting. Of course, only Sam vaguely knows how they work, and the rest have basically no clue, so this takes a long time. But they finally figured it out, so they went back to said time. Problem is, they were a bit late, 935 had already discovered 115, and they had made that robot that runs off 115 (assumption). Though they weren't originally going to send the robot into battle, something of the O4's arrival makes them do that. And with all that 115 walking around the dead of the war, the first zombies are inadvertently made. This could end a few different ways, either the O4 succeed, the whole story gets undone, and the robot is destroyed and WWI goes down basically how it did IRL. Or they fail, 115's reanimating ability is discovered early, and the zombies story gets rewritten one way or another.

Edit: Ok, maybe not. Just saw the overall map pack trailer.