Mikey, on watch over his post-apocalyptic town wall, is confronted in the middle of a frigid January night by a dark-clad stranger seeking entry.The town wall in the middle of a frigid January night is no place for a scared kid to be. But Mikey understands his town faces many threats. The man who approaches the perimeter wearing a dark, ragged cloak surely can't be all that dangerous. But he gets the creeping sense that this is no ordinary stranger.