In this sequel to Under Siege, skilled chef and ex-Navy SEAL Casey Ryback, wishing to spend some quality time with his late brother’s daughter, decides to take her on a cross-country trip on the Grand Continental luxury express train.

But there is danger ahead: a group of terrorists hijack the train in order to take control of a top-secret U.S space satellite capable of causing quakes back on earth. While holding the passengers hostage, the terrorists, led by a mad ex-CIA operative, attempt to blackmail the Pentagon into paying a huge ransom.

Guess who has to stop the terrorists from causing a nuclear attack on the Pentagon with the space weapon?

In the role of Ryback’s niece, Katherine gets to try her hand as an action star!