Dudes we've got to get out of here..! {South park}

Four kids; Stan Marsh, Kyle Broflovski, Eric Cartman, And Kenny McCormick. They set out on an adventure (not really). They are walking and talking and stuff, blah blah blah, till suddenly they get separated from each other. The four were split up in to pairs. They have to find each other and escape before the 'Watcher' finds and Kills them. They boys thought the Watcher was some ghost story, till one pair comes face to face with it. Do the boys find each other and escape?

There is mention of gore.
I do not write smut, this is not the story for it.
There is Angst and depressing parts.