A year after the collapse of Sunnydale, a grieving Buffy is given the chance to go back and see it all one last time.
The catch? She can’t talk to anyone, she can’t kill anything, she can’t break anything or step on a butterfly or sneeze in the wrong place, or she risks unraveling all of time itself. There’s even a fail-safe put in place where if Buffy even comes close to changing anything, a crystal will shatter and send her hurtling back through time. 
However, the past is not always what it seems, and fate may just have a few things in store for Buffy…
AU of Selfless