A young Finnish woman escapes an enigmatic love affair in Moscow by boarding a train to the arctic port of Murmansk. Forced to share the long ride and a tiny sleeping car with a larger than life Russian miner, the unexpected encounter leads the occupants of Compartment No. 6 to face major truths about human connection.
Zhenya and Boris are going through a vicious divorce marked by resentment, frustration and recriminations. Already embarking on new lives, each with a new partner, they are impatient to start again, to turn the page – even if it means threatening to abandon their 12-year-old son Alyosha. Until, after witnessing one of their fights, Alyosha disappears.
A writer in 1930s Moscow has his work banned and is expelled from the official union, leaving him without income. He then writes a novel about a mysterious dark visitor and gradually starts confusing his real life with the story.
