The bad guys dynamite a fish hatchery. They're trying to put the hatchery out of business so they can get possession of oil underneath the lake. Roy is a game warden investigating the dynamiting.
Roy Rogers
Trigger - Roy's Horse
Kay 'Doc' Parker
Rita
Carlos
Martin Masters, Newspaper editor
Russell Masters
Roberts aka Walter P. Johnson
Henchman Vince
Bob Oliver
Foy
