This is the sequel to "Only one chance to love" it's a fabulously gay book and I suggest you check it out.
"Cas." Dean says while squeezing my hand. "If he doesn't get custody we will be on the road all the time, Dad wouldn't probably let us even have a phone conversation with you. It'll be torture, for both of us. I love you Castiel Jimmy Novak and I have only one chance to love you. The plan I have made is the only chance I got. You have to open your eyes and see-
And Castiel did open his eyes, literally.
Now he has no Idea where he is.
He has many questions that need to be answer, like "Where am I?" "Where's Dean and the rest of the gay family?" "Why am I here?"
When he gets all his questions answered he realizes that everything needs to be fix. It seems impossible, like he doesn't even have a chance.
It's a chance he has to make happen then.