What Would Happen if Zombies Attacked the World? On Halloween night, harnessing the power of darkness, an army of zombies rises from the ground. They begin attacking and gradually spreading across the United States. The U.S. military quickly mobilizes to contain the outbreak, but the zombies overwhelm them in numbers, and soon the entire population of the country turns. Canada and Mexico try to build border defenses to stop the invasion. However, the zombies move faster than expected and breach their defenses, eventually taking control of all of North America. Only then do Russia, China, and European forces arrive to assist. Their initial plan is to liberate Alaska, but they quickly realize the zombies are too strong and are forced to retreat and reconsider their strategy. After extensive discussions, they decide on a drastic solution: nuclear weapons. Missiles are launched, annihilating the zombies and finally clearing North America. But the cost is devastating — while the zombies are gone, the continent is left a lifeless wasteland.