The first trailer has been released for Bong Joon-ho's sci-fi thriller, Snowpiercer.  The story is set in a new ice age caused by a failed experiment to stop global warming that killed virtually all life on the planet.  The sole survivors live on a train called Snowpiercer—powered by a perpetual machine—who struggle with the class system implemented on the train.  The trailer showcases a lot more action than I was expecting as the lower-classes, led by Chris Evans' character, attempt a revolution by taking control of the train's engines.  It looks exciting, although I had some difficulty making out Tilda Swinton's dialogue partly because of the character's accent and partly because of the heavy, operatic trailer music.

Hit the jump to check out the trailer.  The film also stars The film also stars John Hurt, Jamie Bell, Alison Pill, Ed Harris, Ewen Bremner, Octavia Spencer, Kang-ho Song, and Ko Asung.  Snowpiercer opens on August 1st in South Korea, but no U.S. release date has been announced yet.