With cold weather approaching, Eve, Levi and Ty return to the fort, despite their near-death experience there, hoping to learn 10,000 B.C. survival skills. Gavin’s attempts to spare Izzy pain…

When a stunning revelation puts Josh and Izzy’s lives on the line, Eve and the other survivors desperately search for the young boy who holds the key to saving them….

With news of one last sinkhole opening, Gavin, Izzy and Dr. Nathan race to Seattle to launch a final rescue effort before it’s too late. Eve embarks on a perilous…