In the original box-office smash Under Siege, action hero Steven Seagal played Casey Ryback, a U.S. Navy SEAL who saved the world from nuclear destruction by outsmarting and killing off terrorists who had commandeered a submarine. In this sequel, Seagal's Ryback character does the same sort of thing aboard a train. Ryback now has retired from the Navy and is taking his niece Sarah (Katherine Heigl) on a vacation. They board a train traveling through the Rocky Mountains. Criminal mastermind Travis Dane (Eric Bogosian) is using the train as a control center in his effort to kidnap a top-secret government outer space super-weapon. Dane built the weapon but then was fired by the government before it was deployed. He has hooked up with shadowy Middle Eastern terrorists who have offered him $1 billion to use the satellite to blow up the Eastern seaboard by targeting a secret nuclear reactor underneath the Pentagon. Dane shows the Pentagon that he's got control of the weapon by blowing up a Chinese chemical plant. Officials can't stop him because they can't locate his headquarters. As long as the train keeps moving, his location can't be fixed. Ryback learns of the plot and enlists a porter named Bobby (Morris Chestnut) to help him in his battle. ~ Michael Betzold, Rovi
This movie was slightly better than the first one, just because it had more action, and Steven Seagal didn't talk as much. Not really a fan of Steven Seagal's acting. If you saw the first movie, then you pretty much saw the second one. About the same set up except for this one is on a train instead of a boat. And then instead of military, they are former government members and hired terrorists. Still, it was not a bad watch. If you liked the first one then you will like this one.
The storyline is a little thin but the action and special effects make this a very entertaining movie. Starting with a real space shuttle launch in the first minute, complete with the fire and noise that really dazzle the viewer, the violence and mayhem never stops. The entire film is on a train moving through the beautiful Colorado river gorge, that alone is worth watching.