In this nail-bitting thriller, Dr. Lewis Shaler (Dougray Scott) boards a late night train with his young son. As he chats with a friendly fellow passenger he realizes the train has hurtled past his own stop and something is seriously wrong. They can’t communicate with anyone outside. The emergency brakes don’t work. As the train rockets dangerously down the tracks and crashes through whatever is put in its path, Lewis and the rest of the passengers take matters into their own hands.