Johnny Price was a high-ranking officer in the military and a decorated war hero; but after being convicted of a crime he didn't commit, he was dishonorably discharged and has never been able to live down the disgrace. When a band of terrorists seize Hoover Dam and threaten to blow it up if their demands are not met, Price is called in and given a shot at redemption as the only man who can fend off the invaders and prevent a disaster that could cost thousands of lives.