This book is set in Papua, New Guinea. The author has done a reasonable amount of research and gleaned some of the native language, which is used as the American characters interact with indigenous people of the land.
As the story begins, a man named Peter Wooley is trying to get away. We aren't sure what he is trying to get away from, but he runs into a man named Samuel, who is accompanied by a group of people who are indigenous to the land. He cannot be allowed to leave. We are not sure why he cannot be allowed to leave. To keep him from leaving, Peter is killed.
A creature called tree kangaroo watches from above, as the natives kill Peter. The words speak of the creature filtering data, "discarding certain parts and wrapping the rest into a coherent package of understanding."
42 years later, a group of high school students, seven, to be exact, ranging in age from 14-17, are on a science trip, led by Quentin Darnell and his wife, Lindsey. We do learn that they are from Missouri. At the beginning of their part of this story, they are in Lorentz National Park, in Papua, in the forest, observing animals and other wildlife.
After their excursion, the drive back to Wamena, in their rented van. They are planning to fly out in the morning, to a larger city, from where they will fly back home.
Something very strange happens on their way, though. After a brief moment when it seems that all of them blacked out, they plane crashes in the forest. Not all of the survive. As the survivors struggle to help the injured, some very weird stuff is going on, such as pieces of the plan dissolving into dirt mounds.
They eventually are found by some native Papuans, along with . . . a man named Samuel.
I won't go any further into the story, so as to avoid spoilers. What kind of book is this? What genre does it fit in? Amazon lists it as "Teen & Young Adult Aliens Books," as well as "Metaphysical Science Fiction." I suppose that might be accurate.
At first, there is nothing alien-like, supernatural, or "science-fictiony" about it. But as the story progresses, things get stranger, and it becomes apparent that there is a force about that is deeper and darker than any of them would have ever imagined. This force is known simply as Lamotelokhai. And it apparently came from somewhere out in space.
And that's all I'm going to say about that.
This story, in my opinion, was well-written and moved along quite well. I don't recall ever being bored or losing interest. In fact, I was always eager to get back to it, in order to find out what happens next. I enjoyed it thoroughly, and would not have guessed it to be YA oriented until I saw how Amazon listed it as such. It has elements of Science Fiction, and, as Amazon lists it, a little bit of metaphysical nature, as well. There might even be a little bit of horror, as well.
It reminded me, more than once, of the book and movie called The Ruins. This was another story where "civilized" people stumbled onto a forest secret, after which they could not be allowed to leave.
Oh, and about that "tree kangaroo?" A most interesting creature. You'll have to read for yourself to find out what he was.
This is, of course, the first in a series. Will I read the next one? Perhaps. But not right away. It would be interesting to see where it all leads, as the ending of this one is not really an ending.