What about this;
A young guy, maybe 16 or 17, goes hunting with his older brother whom he idolises.
While they are on the trip the younger brother (let's call him Callum) decides to get up really early, like just around pre-dawn, to try to impress his brother by bringing back something to eat for breakfast, even though Nathan, his older brother warned him that they should never seperate, as this is a pretty dangerous part of the country and very wild (i'm thinking Canada for location, but it could easily be Australia, North or South America or even Europe, they could have travelled a bit to get where they are).
Cal is hunting, spots some big game, is lining up for the shot, visibly nervous (this is his first hunting trip) when a noise from behind him startles him and with thinking he turns and shoots, killing the stranger who had appeared from no where, a bearded man who falls to his knees, utters some words in a foreign language and dies in Cal's arms.
I could think of a hundred places to go with that, but it's a start.