Disgruntled, divorced father Ray Ferrier (Cruise) is struggling to connect with his estranged kids, who have been dropped off by their mother for the weekend, when a severe and unusual lightning storm leaves his New Jersey neighborhood powerless. Over the course of the next few hours, it becomes obvious that this was not a storm at all, but rather the first sign of a worldwide alien attack. Emerging from the ground in multi-legged tripod-like machines that have apparently been stored beneath the earth's surface since before man's time, these aliens begin the process of waging a long-planned war on our planet.
A working class man in New Jersey tries to protect his troubled family from invading aliens.