Aboard a grand train journey from Denver to Los Angeles, a former Navy SEAL, Casey Ryback, is en route with his niece, Sarah, to mourn the loss of her father. Their seemingly peaceful trip is shattered when mercenaries hijack the train in the middle of the Rocky Mountains. The antagonists, led by a tech-savvy terrorist, take control of a top-secret weapon capable of controlling satellites to cause earthquakes. The mastermind behind this scheme seeks revenge and immense wealth by threatening to destroy Washington D.C., while the train becomes their mobile command center hidden from radar and law enforcement.

Unbeknownst to the hijackers, Ryback's presence on the train turns their perfect plan into chaos. With his expertise in combat and strategic warfare, Ryback silently maneuvers through the train, engaging in deadly battles to protect his niece and the other innocent passengers. As he works to derail the terrorists' plan, Ryback uncovers a deeper conspiracy involving corruption within the government. Struggling against time and armed adversaries, he aims to neutralize the threat and bring the culprits to justice before they can execute their catastrophic agenda, all while keeping his niece safe and minimizing collateral damage aboard the speeding train.