Isaac Sirius Black was the son of Marlene McKinnon and Sirius Black, all his life he had to live with people looking at him with disgust in their eyes, like he was evil for being the son of a Black. Following his parents footsteps into the house of Gryffindor and befriending a Potter, people were in shock when Isaac and Harry became best friends despite the tragic endings of their parents. Then they find out his true backstory and they feel sorry. But Isaac can't stay in Britain anymore, not with the memories. So he takes his beloved son and leaves. He finds many things in Forks, but he never expected to find his other half.