What the hell is happening?

This story is set after the Order of the Phoenix and Sirius did not die. This is yet another Severitus fic. Harry potter is living with Sirius now and is having a fantastic summer. Only school starts up again, this is when sh** gets real! What does a potion, a ring, family tree, potions class as well as the dungeon bat have to do with this story. READ TO FIND OUT! :)