Off the northeast coast of Russia, the captain and crew of a small crabbing vessel are brutally murdered by members of Bratva, the Russian mafiatheir bodies stuffed into crab pots and thrown overboard. The killers scuttle the vessel off the coast of Alaska and slip ashore.

In Washington, DC, Supreme Court Justice Charlotte Morehouse prepares for a trip to Alaska, unaware that a killer is waiting to take his revengeby livestreaming her death to the world.

In Anchorage, Alaska, Deputy US Marshals Arliss Cutter and Lola Teariki are assigned to security detail at a judicial conference in Fairbanks. Lola is tasked with guarding Justice Townsends teenaged daughter while Cutter provides counter-surveillance. Its a simple, routine assignmentuntil the mother and daughter decide to explore the Alaskan wilderness on the famous Glacier Discovery train. Hiding onboard are the Chechen terrorists, who launch a surprise attack. While they seize control of the engine, Cutter manages to escape with Justice Townsend by jumping off the moving trainand into the unforgiving wilderness.

With no supplies and no connection to the outside world, Cutter and the judge must cross a treacherous terrain to stay alive. Two of the terrorists are close behind. The others are on the train with the judges daughterand they plan to execute her on camera. With so many lives at stake, Cutter knows there are only two options left: catch the train and kill them all . . . or all will be killed.