The only work is backbreaking manual labour for a US oil company that is drilling in the jungle and it pays nowhere near enough to get out to some place better.
When the company desperately needs some dynamite in dangerously poor condition transporting through the jungle it offers a large sum to anybody able to do the job.
They are just desperate enough to take the work.
This is an infamous William Friedkin flop that sort of defies genre.
It's not really action, but is tense.
It starts with a short piece showing why each of the characters fled from where they were before.
It sort of has some kind of karmic comeuppance in store for each of them but didn't moralise.
The struggle through the jungle is grim with them coaxing the monstrous trucks, which almost seem to have demonic faces, past various hazards.
They can't ever go back only forward to an inevitable destination but at the same time they are just driving some trucks.
I'm not sure what to think of this. There's a tiny touch of Apocalypse Now about it, but also some guys just drive some trucks through the jungle.
It is both immensely deep and pitifully shallow. A conflicted 7/10 weird 70s fever dream.