Cas, the King of Karaoke

AU Destiel: This is the story about an attorney, Cas, who had a night out with friends that he can't quite remember. He remembers that they were celebrating his promotion, but not much else. His friend, Gabe, though, has a video that might just explain it all. Of course, new memories lead to complications and a world of dangers that Cas cannot seem to escape. Part I Complete.