In order to cope with the increasingly severe greenhouse effect, countries around the world launched a refrigerant code-named CW-7 in 2014, but who knew that it would push the earth into an extremely cold abyss from which there would be no return. Most humans died of cold and panic, and only a few thousand people boarded the train developed by Wilford Industries and became wanderers who never stopped. With the help of the perpetual motion engine developed by Wilford (Ed Harris) and equipped with various complete facilities, this train built its own independent ecosystem in the following 17 years, rotating over and over in a long journey of 438,000 kilometers. The lower-class people living in the last carriage have been oppressed. In order to fight for freedom and power, they have launched many riots in the past, but without a doubt, they all ended in failure. This time, Curtis (Chris Evans), who has a charismatic leadership, tries to find the imprisoned security designer Namgoong Min-soo (Song Kang-ho), and use his hands to open the heavy doors leading to the first carriage to overthrow Wilford's rule. At the beginning of the new year, a bloody revolution is underway... This film is based on the French comic "Le Transperceneige".