In the summer of 1864, a man was on a train in the deep south when it began to slow. When it came to a stop, the man hopped out and joined a long line of others just like him outside a massive wooden fence. As the line approached, its massive gate began to open, and when he could see inside, he could barely believe the hell on earth in front of him. This is the horrifying story of the men behind those walls, and as always, viewer discretion is strongly advised