They're hunting these whale looking things and when they kill them, they drill a hole up into their adrenal gland and fill up this giant vial with that they call liquid gold, which has anti-aging properties and "way way way more than you can get from a human being." (So....they usually get it from human beings?)
It's so valuable they don't even bother with the rest of the whale's body. They just take the adrenochrome and bounce.
Watched the movie because the wife wanted to watch it, and all I did was picking out comms and references.
The cabal telling us they will drive us out and hunt us down, because we have humanity in us so we will let them live, allowing them chance after chance to kill us.