As the survivors attempt to integrate with the villagers at the fort, a flock of pterodactyls attack their new home; Ty tries to figure out his next steps and seeks help from an old friend.

When a massive fire breaks out, forcing everyone to flee, 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 that he's been seeking.