The name of this Tvshow is Snowpiercer Season 1 released in 2020 and it's main theme is 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.