This movie has been posted about here a couple times, so I checked it out. It's on Netflix.

It's about a train derailment in Ohio that causes an "airborne toxic event"

Entertaining movie. Beautifully and artfully done. Trippy.

But it also has many nested themes. One recurring theme is knowing things before they happen, and foreshadowing of future events based on current ones. Other topics include Deja Vu, inability to accept reality, combining simulation & reality, the afterlife, generalized fear of death, and fear of death due to exposure to toxins.

Tons of symbolism throughout, including occult and spiritual symbolism, much of which went over my head. Some mild blasphemy. If you're good at decoding symbols, check it out.