Snowpiercer (2020)

Set over seven years into a post-apocalyptic world blanketed in ice, humanity's last survivors cling to life aboard a massive, endlessly traveling train that circles the Earth. Within its confines, a fierce struggle unfolds, highlighting class divisions and social inequality as passengers grapple with the harsh realities of survival. As tensions rise and alliances form, the train becomes a microcosm of society, showcasing the lengths people will go to secure their place in this new, frozen reality.