Imagine your entire world, from birth to death, as taking place on a train.  And on this train, you have the people that make it run – who end up as members of a perpetual underclass – and the well-to-do passengers, who end up as the people who control everything – and you have the world of Joon-ho Bong’s “Snowpiercer.”

Joon’s film, his first to include American and British actors, has yet to be released domestically, but has opened strongly in his home country of South Korea.