Spike saves Buffy from utter disaster, and he gets a reward he never expected. - after “First Date” with minor alterations (aka ignorations)

Ten years have passed since Sunnydale fell. And for ten years, Buffy believed Spike to be dead and burried with it. Now that a new apocalypse comes a-knocking, she has to rely on him for help. But something just isn’t right with the vampire. Will she be able to figure out what it is before it is too late?