In order to stop global warming, mankind caused a new ice age. The only people alive on the planet live on a continuously riding train and it is within that train that the film plays. The train has a strict class society. The ‘low’ people from the back decide to move up front since they feel suppressed. Some wagons look like the inside of a train, others seem massively big. As the troup continue to move forward some wagons have the strangest content and inhabitents.
For the largest part the story seems well thought-through. There are some details that only get clear lateron and overall the train proves to be a picture of society and explains why things are the way they are. This is actually fairly well done. The overal framework of a single train on a frozen earth that takes a year to fullfill one round is so far fetched and unlikely that I cannot really recommend “Snowpiercer”. It too often seemed as if the director’s ideas for a story did not fit his train and there are way too many improbabilties.