Gabriel's Guide to Kicking Metatron's Ass

After Cas gets a strong lead on what could possibly be the real and actually alive Gabriel, Team Free Will is reunited once again to search out for the one familiar face that is hopefully still on their side. Along the way, the family business returns, secrets are revealed, and Dean learns that the past will never be through with him. Destiel, Sabriel. Post 09x18. Canon Divergence.