Come find me now, we'll hide out (we'll speak in our secret tongues) (слэш)

It’s not often these days that his wolf and human instincts are at odds -- not when they’ve been living seamlessly in sync for so long now.
But the wolfish part of him is looking at that boy, pale and too-thin, wearing that ridiculous red sweatshirt that, for one thing, wasn't nearly protection enough in this weather, and for another, might as well be a flashing, neon sign that says chase me, and all it appears to see is want.
 
Or: Stiles's post-graduation road trip goes terribly wrong, and Derek has to save the idiot human from freezing to death.