Snowpiercer was a movie from 2013, and now SYFY has made a TV series of it.
The gist is that humans tried to cure global warming - or something - and managed to cause an instant global ice age. Uh huh... And so they somehow round up all the remaining humans surviving and load them on a railroad train with a perpetual motion engine - no need for fuel, get it? And it runs on a track all the way around the world...non stop. I guess they laid the track on the sea ice? SO kinda like generation-starship stories, this thing has turned into its own society with the haves and have nots. Zaniness ensues.
When I look it up, it gets critical acclaim, even rotten tomatoes liked it. Standard comments about microcosm of humanity, blah blah blah. But I found it incredibly stupid. I couldn't suspend my dropped jaw. WHy bother to take the remaining humanity riding around the world over and over in a non-stop railroad trip? WHO maintains the track? The train never needs maintenance on the exterior? And I suppose lunch is Soylent Green? And they smack you in the face with a shovel with their social commentary.
Now they are making a TV serial, with the basic premise of the movie, and the standard formula series setup. Who are the good guys? WHo are the bad guys? WHo is a bad guy pretending to be a good guy? WHo is the bad guy who finds a noble core within. blah blah blah.
Of course others may disagree.