Dean, Sam and Castiel were on a mission, researching about a thing that seemed to be hunting them, rather than the other way around. They had gotten more and more clues to it being some sort of demon...

But right now, as they were in a room with salt all around it and you still managed to manipulate things in it, Castiel froze and muttered a low "God help us... We're in so much danger..." Dean and Sam just looked at him worriedly and Dean couldn't help but speak up "Why?! What's up?! Jesus, Cas! Tell us!" He practically yelled and Castiel turned to both of them, a genuinely worried look on his face "They're not a demon... They're an angel..." Cas breathed, making both of the Winchester brothers freeze. Another angel?! That surely meant trouble...