*Dean's point of view*

It had been two days since I had seen Cas, normally I wouldn't be worried or in the least bit concerned but I had been calling him and, something I didn't do often, praying to him.

I walked into the living room.

"Sam, have you seen Cas lately? He hasn't been answering me recently." I asked Sam.

"No I haven't either, come to think about it, I haven't seen Gabriel either, he normally he comes and tries to trick me and he keeps leaving me empty sweet wrappers and things." Sam frowned.

"Look, there's a note from Castiel." Dean said.

Sam came over and we both read it.

To Sam and Dean,

I am sorry for not telling you this before, this is a matter for Angels only, but if it has been too long since you have read this and have had no reply and/or haven't heard from me, then I and my brothers are probably in trouble and will need your help, so come quickly. The coordinates are on the back.

From your Angel,

Castiel

I looked at Sam, we needed to go, and quickly, find these Angels and help them.