After the clearing is destroyed in a dinosaur attack, Levi, Sam and the other survivors must find a new home to live. Gavin meanwhile discovers a clue about where Eve has gone, though tracking the lead down results in more tragic consequences.

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; when Ty and Sam try to figure out how to bring their friends home; Ty becomes sidetracked by his past demons.