Snowpiercer is set seven years after the world has become a frozen wasteland, and the remnants of humanity inhabit a gigantic, perpetually moving train that circles the globe. Class warfare, social injustice and the politics of survival are questioned in this riveting television adaptation.

This show follows outsider, orphan and street-wise chameleon Sarah, portrayed by Tatiana Maslany. After witnessing a woman's suicide, Sarah assumes the stranger's identity, who happens to look just like her.