When decorated soldier Captain Colter Stevens wakes up in the body of an unknown man, he discovers he's part of a mission to find the bomber of a Chicago commuter train.
In 2027, in a chaotic world in which humans can no longer procreate, a former activist agrees to help transport a miraculously pregnant woman to a sanctuary at sea, where her child's birth may help scientists save the future of humankind.
Following the events at home, the Abbott family now face the terrors of the outside world. Forced to venture into the unknown, they realize that the creatures that hunt by sound are not the only threats that lurk beyond the sand path.
Scientists have discovered how to 'hop' human consciousness into lifelike robotic animals, allowing people to communicate with animals as animals. Animal lover Mabel seizes an opportunity to use the technology, uncovering mysteries within the animal world beyond anything she could have imagined.