WELCOME TO THE BOTTOM OF THE FOOD CHAIN! Aside from being freakishly tall, Joe is just an ordinary divorcee taking his son, Danny, to the zoo for his weekend of custody. Everything is going great until a bizarre snake attack sends everybody in the zoo running for cover. It isn't long before Joe realizes that there is a lot more going on than a simple snake attack - and if the hungry lions, roaring gorillas, and rampaging elephants have anything to do about it, there will be more bloodshed to come. All of the world's animals are attacking and no one knows why. The only thing that is certain is man has fallen to the bottom of the food chain.