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.
As the survivors attempt to integrate with the villagers at the fort, a flock of vicious pterodactyls attack their new home; Ty tries to figure out his next steps and seeks help from an old friend.
As Gavin and Sam search for a secret military base, they're surprised by an old colleague of Gavin's who may hold the clues to finding Eve. Ty becomes sidetracked as he confronts his demons from his past.
When a massive fire breaks out, Sam and Lucas lead the group's fight for survival. Gavin is kidnapped by a woman with a surprising connection to his old life who may hold the answers about Eve.
Gavin leads the survivors in trying to find Eve, Josh and Riley. Will he be able to finally reunite his family and still find a way back to the lives they once knew?