I received an ARC copy via NetGallery in exchange for an honest review.

In this sci-fi adventure, a group of Native Americans, from a dystopian future, find a system that allows time travel. However, the cost required for this mission is expensive.
The group organizes a journey through time for one of them with the mission of killing Christopher Columbus before he discovers the Americas so as to guarantee their people independent development and, perhaps, thus save the human race from the cataclysms that have decimated it.

The story is very fascinating, full of metaphors and innuendos, fascinating.

What I didn't like is the link between the motive and the mission: I don't understand why stopping Columbus would have prevented the end of the world. However, the dynamics of time travel have been respected and in an original and imaginative form.

Too bad about the ending, I would have expected much more.