A couple of them are childhood moments, in others he's a teenager; there are ones taking place around his arrest and PoA-time, as well as OotP time. The connection between them all being events or moments in Sirius's life, of course.
Sirius Black: A son, a brother; a friend, a Marauder; a prisoner, a fugitive, a godfather. Many roles were played by Sirius, most veiled with tragedy or loss ... But even in dark night skies, there are stars that shine bright. A short story collection dedicated to Padfoot.