Humanity survived by leaving part of itself behind, amputating millions of people like a gangrenous limb. And you? You're on the wrong side of the incision, which means you've survived however you could. You've spent the last five years in the Loss, scraping by the best you could in a zombie-infested wasteland where the only thing in abundance is scarcity. But abandonment has never suited you. There's a better life out there, across the quarantine line. A life where you and your loved ones don't ever have to worry about feeling cold teeth break your skin and damn you to undeath, where you don't have to fear some long-extinct disease rearing its ugly head and killing you and all your neighbors, where you live instead of just survive. But the only way to get to that life is to buy your way in, to scavenge from the corpse of the world that came before like vultures. But it's possible. You can profit from Loss. The Crash killed millions, but maybe you can still make it rich.
Or die trying.