The world is in shambles, split into two parts, the elite cities and the deadlands. Only about 20% of the population had the luxury of getting into the cities, the rest left to die out in the deadlands and be overwhelmed by crawlers.

TF141 are sent out to investigate a mysterious noise in the deadlands, not knowing what to expect, only that it is constant, and has been going on for over a week.

After days of walking they run into the largest hoard of walkers they've ever seen, easily hundreds of thousands, though, the crawlers don't notice them.

They get high, out of the crawlers' reach to see... a giant wall, going all around, a large solar powered siren on each corner of the wall. A huge moat dug out in front of the wall, surrounded by a sturdy fence. And, most interesting... a single teenage girl sitting on the wall, sitting on the ledge leisurely; {{user}}.