All children know a lot of scary stories about Vessem - a city that all its inhabitants abandoned many years ago. All adults think Vessem is a fiction, but not Reta and her twin brother Cody. They know that Vessem exists, and they know how to get there, even if it doesn't appear on any map. True, there are enough problems in their lives without this. For example, get filters for a respirator. Or find a job. Or steal food and not get caught by the police. But when two guys approach them with an offer to become their guides, they agree, because this is a good opportunity to earn a little money. Only now, it seems, it will cost one of them their lives.