Walli Beckwith is a model astronaut. So when she refuses to leave her post at the international space station following an accident that forces her fellow astronauts to evacuate, her American and Russian colleagues are mystified. But Walli is stuck in a race against time to save both a precious part of the world and the life of her niece, a health care provider for indigenous people in the Amazon jungle who are being burnt out of their homes by paramilitary forces, supported by the Brazilian President. Will the US military intervene? Walli will go to any means necessary.