This work could have adult content. If you proceed you have agreed that you are willing to see such content.
When you get down to brass tacks, Castiel is only good at one thing, and that's saving Dean Winchester. But how do you save a demon? Especially when the demon in question is using every dirty trick in the book to avoid being saved? (Warning: Dub-con, lots of incredibly filthy dialogue, a touch of smut, and a smattering of violence)