Gods of Old by Nival_Vixen
The universe is so much older than most people know. Even with Earth's scientists and theorists, it is so much older than the Big Bang, than the gasses and bacteria, than the dinosaurs and the ice. Before all of that, there was nothing but a vastness of space. But something has to come from something, of course. Nothing begets nothing, as the adage goes, and in that vast space of nothing, there was something. Two somethings, in fact. Nameless beings from another universe, slipping through a tear in the fabric of time and space itself. They saw the nothingness of the universe and wanted more, wanted a world to call their own, so they came together to create something out of themselves; the blank universe was their canvas and their power was the paint.
(AU in which Stiles and Derek are gods)
Stiles never meant for them to know. Deaton shouldn't have noticed an inkling of his magic, but Stiles supposed it was lucky that he only recognised that small spark, rather than the full extent of his power.
Stiles and Derek want revenge now that they both have their powers and memories back. They're planning on annihilating the human race, completely and utterly wiping humanity from the face of the Earth that they created.
Scott's not happy about that and is determined to stop them, no matter the cost to himself or his pack.
Four years have passed since Stiles and Derek left Beacon Hills, and today, they're going back to face Scott's army.