A train's whistle sounds in the dead of night. Snow falls on deserted tracks. Somewhere, in the city, a woman prepares to leave on a journey that will change her life. Somewhere, in the country, a man drives to his final destination. A young woman prepares to depart on a journey that will take her into the very heart of darkness. But before she can leave her apartment, there are just a few loose ends she has to tie up... Alex Davenport wakes up on the train. Her travelling companion, Harold Lang, is nowhere to be found. Don, the conductor, isn't exactly being forthcoming as to what's going on. Why are Alex's friends here? Who's the ballerina? Is this a nightmare, or is Alex's hope of waking up simply a pipe dream?