A group of strangers find themselves trapped in a maze-like prison. It soon becomes clear that each of them possesses the peculiar skills necessary to escape, if they don't wind up dead first.

After an apocalyptic winter consumes the Earth, humanity’s survivors cling to life aboard a purpose-built train, endlessly looping the globe. First class passengers live in luxury, while those in the tail near-starve, until an unexpected murder sees ‘tailie’ detective Layton pulled to the front in order to investigate.

In season two, an entirely new power struggle emerges, causing a dangerous rift as people are divided between their loyalty to Layton and to Mr. Wilford, who has a new train, new technology and a game plan that keeps everyone guessing. While Layton battles Wilford for the soul of Snowpiercer, Melanie leads the charge on a shocking new discovery that could change the fate of humanity.

La Tierra se encuentra cubierta de hielo y es inhabitable. Los últimos humanos vivos la recorren en un tren en el que sobreviven y tratan de guardar un equilibrio, que cada día que pasa se torna más frágil.

A streetwise hustler is pulled into a compelling conspiracy after witnessing the suicide of a girl who looks just like her.