The Walking Dead season 3

Rick and people following him spend the winter months wandering around, running from herds of walkers. Eventually they discover the abandoned building - it is the former prison. There are walkers on its territory, many of them, so people make a decision to avoid it. But Lori is on the last stage of pregnancy so they need to find some place which may provide safe childbirth and become their temporal shelter. For now prison is the best option they have to organize that place. Rick and his people took one part of the building and cleaned it up from walkers. But being on a secure mission Hershel is bitten by zombie and Rick has to cut off his leg to safe him. In the prison dining room they find another group of survivors - trapped prisoners. Now they are going to make a deal with them concerning food supply.. But can Rick and his team trust those who were kept in prison?