After the clearing's destroyed in a dinosaur attack, the survivors must find a new home; Gavin discovers a clue about where Eve has been taken, but tracking the lead down results in even more tragic consequences.
Gavin leads the survivors in trying to find Eve, Josh and Riley in a final attempt to reunite his family and find a way back to the lives they once knew.
With Gavin on the verge of dying, Eve and her family make a desperate attempt to set things right -- even as an unexpected twist threatens to tear them apart forever; Veronica reveals a secret that sends her relationship with Lucas into jeopardy.
