A massive sinkhole opens up in the middle of Los Angeles, separating a family between two worlds -- the mother and son fall into a dangerous primeval land, while the father and daughter are left above to solve this unexplainable mystery.
Desperate to reunite with her son, Eve follows a lead that brings her face to face with a ruthless prehistoric group.
Gavin enlists his grandfather's help to guide him to his missing wife. Eve and Levi navigate a horrifying new reality. In 1988, Josh and Riley discover they're being followed by a suspicious man.
After an emotional reunion, Gavin and Eve attempt a daring escape from their unforgiving captors. Lucas leads a dangerous mission to the fort to reclaim the resources that his friends desperately n...
When a fog falls over the Clearing, Eve leads a defence against a group of invaders, only to encounter a more dangerous threat. Josh and Riley pursue a woman who may hold the key to stopping impend...
Eve, Gavin and others attempt to commandeer a shipment of black rock to gain access to the mysterious building. Josh and Riley must act swiftly to prevent Caroline from altering the timeline.
When their plan to infiltrate the building goes awry, Gavin finds himself face to face with its enigmatic leader. Josh and Riley enjoy some fun before a startling turn.
A reunited Harris family leads the effort to rescue Caroline and stop the sinkholes. With Lucas's life on the line, Ty accepts a challenge to win his friend a cure.
The Harrises return to 10,000 BC, determined to upload a virus that will stop all sinkholes, despite knowing that this will mean they will never get home again.
When a Survivor is murdered, Lucas and Sam lead a contentious investigation to find the killer.
A ruthless enemy holds the Clearing captive, threatening to kill a beloved survivor if their demands aren't met. Gavin and Sam lead the rescue attempt, aided by an old friend.
There are celebrations on the union of Ty and Paara, until a controversial guest threatens to upend it. Lucas offers Veronica an unexpected strategy to unravel her captor's odd connection to 10,000...
James, Eve and Gavin infiltrate Lazarus to save Ty and stop Kiera. Veronica must rescue Ella from a lethal horde beneath the clearing before she is stung to death.
Gavin leads his family toward a new way home, but each step takes them closer toward his devastating vision of Eve's death. Levi, ostracised from the others, is given a chance at redemption.
Eve and her family make a desperate attempt to set things right - even as an unexpected twist threatens to tear them apart. Veronica reveals a secret that puts her relationship with Lucas into jeop...