At the end of Harry's third year of Hogwarts he return's to the Dursley's mentally broken. However one thing was different. Laying on his bed was a note that said someone was coming, the note had a Hippogriff feather attached to it... A story where Sirius becomes a father like figure to Harry and they battle against the challenges thrown against them.

What if Sirius Black escaped Azkaban before Harry arrived in Hogwarts, and showed him the wizarding world and it's politics of the ancient and Nobel houses before Dumbledore could show him the light. What if Sirius found about horcruxes and hallows. How did magic come about?