After an accident, veteran off-gridder Jim James attempts to reach the hospital by train, but obstacles may put him in jeopardy. Elsewhere, the freight crew fights to open up a port in lockdown.
A quarter of a billion dollars' worth of military hardware is on board, but a rogue gunman threatens to derail the journey. Off grid, Nancy and Jim face challenges during an ambitious cabin build.
In the woods Jim and Nancy James challenge a wannabe off grid couple, and Jennifer Hawks tries to find a missing settler. Meanwhile, the freight struggles to deliver a heavy load.
In Alaska the spring thaw puts the railroad into meltdown mode and a freight train is stalled on the line's highest bridge the infamous Hurricane Gulch.
Heading to the highest point on the Alaska Railroad, the freight train battles north to make a crucial delivery. Off grid things get steamy as old timers JT and Marvin build a traditional bath.