Killer swarms are on the rise and they’re deadlier than ever. As food resources become scarcer, animal species all over the world adapt by swarming together to murder and devour everything in site. In Australia, thousands of massive jellyfish wreak havoc on power plants, fisheries, and beaches. In South Africa, legions of giant rats attack in the night, damaging homes, contaminating food, and eating the faces off children. And in South America, schools of voracious piranhas chomp unsuspecting swimmers to bits and pieces. In Killer Swarms, we’ll see why these species band together and how they’ve become monster threats to everything in their path of destruction.