Casey Ryback hops on a Colorado to LA train to start a vacation with his niece. Early into the trip, terrorists board the train and use it as a mobile HQ to hijack a top secret destructive US satellite.
Dr. Bruce Banner, thanks to a gamma ray experiment gone wrong, transforms into a giant green-skinned hulk whenever his pulse rate gets too high. Meanwhile, a soldier uses the same technology to become an evil version of the original.
Jack Hall, paleoclimatologist for NORAD, must make a daring trek across America to reach his son, trapped in the cross-hairs of a sudden international storm which plunges the planet into a new Ice Age.
As the Allies sweep across Germany, Lore leads her siblings on a journey that exposes them to the truth of their parents' beliefs. An encounter with a mysterious refugee forces Lore to rely on a person she has always been taught to hate.