Angelus_Fortis
(Season 9 AU) Episode 3 - "I'm No Angel" Canon Divergence. The angel, Ezekiel, is possessing Sam Winchester and has convinced his older brother to kick the now-human Castiel out of the bunker. Because of that, Dean has begun feeling suspicious of his little brother's savior and decides to make the 'heart choice' - trusting his best friend. The hunter won't let his family be ripped apart right when they needed him the most so along with Cas, he makes his own plans. Dean Winchester and Castiel set out to save Sam, restore Cas's grace and make everything right. "You really believe we three will be enough?" Cas asked. "Yeah, Cas, I do. It's us against the world," he grinned.
Disclaimer: I do not, in all intentions and purposes, own SUPERNATURAL. Sadly, this sad,sad world belongs to Eric Kripke, the WB and CW. The first part of Chapter One contains canon conversation taken from Season 9 Episode 3 - "I'm No Angel"