mischief managed a sirius black fanfiction

Sirius Black is happy. He has everything one could ever need. Sure, the increasing threat of Voldemort and his death eaters is something that he takes very serious but he couldn't even think of something that could happen to him now, that he wouldn't be able to get through. After all, he had his friends at his side, his chosen family. But then on October 31, 1981 everything changes