In a future where a failed global-warming experiment kills off most life on the planet, a class system evolves aboard the Snowpiercer; a train that travels around the globe via a perpetual-motion engine.
With no clue how he came to be imprisoned, drugged and tortured for 15 years, a desperate man seeks revenge on his captors.
A young girl named Mija risks everything to prevent a powerful, multi-national company from kidnapping her best friend - a massive animal named Okja.