(When I say very long, I mean like hundreds and hundreds of pages long. So it's going to be a while before it's all up there.)
This was written after book five, when we know that Lucius was not in school with Severus, Evan and the Marauders. The Prologue bit is when the boys are younger, and the second two parts are at the end of their Hogwarts career.
Prologue: In the Beginning
Part One: Goodbyes and Hellos
Part Two: Cat and Mouse