[L.J.Steele]

A cinematic tradition is the thing you are escorting turns out not to be what Mr. Johnson told you it would be -- more dangerous, more ethically dubious, etc. I suppose Cook's Black Company books are akin to that genre -- the Lady is not what she first seems.

Or the PCs need to teach it life/survival lessons on route -- Star Trek TOS' Elaan of Troyius is a classic of that genre.