La Brea

When a massive sinkhole opens in Los Angeles, the Harris family is split in two. Eve and her son are sent to a mysterious primeval world.

With Josh's life on the line, Eve traverses the dangerous wilderness back to the clearing to save him.

With the survivors' food supply dwindling, Eve and Ty venture into the forest on a risky hunting expedition only to face unexpected dangers that threaten their survival.

The sight of a crashing plane spreads a wave of unexpected hope through the clearing as Eve and the other survivors search for its fallen pilot.

Eve, Levi and the rest of the search party explore a mysterious fort that raises more questions than answers.

With time running out before their window home closes, the survivors of the sinkhole hatch a final escape attempt.

When a chaotic superstorm hits the clearing, a structural collapse puts Marybeth and Lucas' lives in danger.

With cold weather fast approaching, Eve, Levi and Ty return to the mysterious fort despite their near-death experience there in the hopes they might share their 10,000 BC survival skills.

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.