Civilization’s going off the rails on this train
When global warming can no longer be ignored, world governments gamble on an experimental coolant. Humanity waits for a cooldown after a chemical called CW-7 is released into the skies above every country on earth.
Instead of temperate weather, CW-7 kicks off the next ice age, making life on earth impossible. The only survivors of the man-made extinction are the residents of Snowpiercer, a colossal train with a perpetual motion engine that rockets around the globe on a set of frozen, rickety tracks.