A touching story all over the two hours, not just in the end. Intrigues - all over the movie, not just in the start. The end of the story - it may end at any moment, and it would still be great. No particular connection to Moscow, Russia, subterranean train - it can be anywhere, any time. People meet each other, struggle, about to die, struggle, survive, get to know each other on a new perspective.
It's a "must pause" every time you go to the bathroom. 'Cause even without the "subway drama", it's still a deepest drama, and it would rise your sentiments to a whole new level. 9 out of 10, but it starts from 9.