As the Alaskan summer heats up, so does the crime. In the remote area surrounding Glennallen, Troopers search for a family of missing moose hunters. Because the terrain is expansive and difficult to cross on foot, Trooper Dahl takes to the skies in his floatplane. It's not long before he spots the stranded family's vehicle trapped in a creek below. In Seward, the Fourth of July is creating an excuse for reckless behavior.