Set in the Galápagos Islands, but filmed in Australia.
I was able to see the press conference that Ron Howard and the four main stars gave. Howard explained that he had the project in mind for a time, worked on it some during the recent COVID pandemic and lockdowns. He knew it would not be a project that a typical studio would go for so he went at it his way.
The movie is a fictional drama based on real people and their attempt to find their own Eden in the Galápagos Islands (filmed in Australia). It doesn't work out as hoped because, in the end, people are people and they can cooperate together for only so long.
This is analogous to the theme that played out in the year 2000 movie, "The Beach" with Leo Dicaprio. As I wrote in my comments for that one, "Even though these 20 or 30 men and women all went to the island for "pleasure seeking", ultimately roles need to be taken, duties accepted, not everyone agrees, jealousy starts to erode relationships, certain people seek power, and when some get seriously injured, "out of sight, out of mind" is the remedy so as not to upset "paradise." In other words, they end up creating on a smaller scale the same world that they sought to escape from. Eventually this "house of cards" starts to fall down, and ultimately everyone realizes paradise is internal, not some idyllic place."
Good for Howard to bring this story to the screen.