The inhabitants of a small Southwestern town feel the fallout when radiation from bomb tests creates giant, mutant ants that descend on their community. Facing human extermination, a team of scientists scrambles to figure out how to stop "them." Filled with creepy creatures large and small, this 1954 sci-fi spectacular is one of the most influential horror films of all time -- and also captures America's mood at the dawn of the Atomic Age.