Jack Carter, a man constantly living in a state of regret, takes his technology-obsessed family, including their lovable dog Buster, on a Christmas vacation to the mountains in the hopes of reconnecting with them. While on vacation, Jack and his family run into an estranged, uber-competitive friend of Jack's, who now lives the life of luxury Jack pines for. Through a series of juvenile competitions, Jack realizes that the love of his family is more rewarding than anything money could buy.

In the Nevada mountains between Las Vegas and Reno in the desolate nuclear testing grounds of Dreamland (Area 51), a young couple Megan and Dylan stop in a greasy spoon cafe where they learn about the Area 51 government base a few miles away. After they get back on the road, Dylan turns on the radio. The only broadcast he can find is a speech from Adolf Hitler at the 1936 Olympic Games. The car dies and a visitor appears from another moment in time. When Megan and Dylan look closely they realize that it is Hitler from the past.

In this modern retelling of H.G. Wells' classic sci-fi horror, civilization is laid to ruin when a super race of aliens invades Earth. In a blink of an eye, massive "walkers" cover the planet, annihilating all in their path. As cities crumble and human flesh is ripped from the bone, one man struggles to find the one weapon that will turn the tide for mankind.