Astronaut Walli Beckwith is conducting an experiment on the International Space Station when an imminent collision leads to an evacuation order. Walli, however, refuses to leave, for reasons unknown to her two crewmates. As they return to Earth, she remains as the sole occupant on a damaged station. Meanwhile, in the Amazon, her niece is conducting aid work in response to a humanitarian crisis. The Brasilian government is ruthlessly chasing native populations from their lands in order to make space for industrial farming and deforestation. The Amazon is on fire.
The plot soon evolves into a very competent action-thriller. Most impressively, Mr. Kluger does not take any drastic shortcuts on realism; events are solidly underpinned by existing science and technology. The characters do feel a bit flat, unfortunately, but this is a page-turner nonetheless.