Time of Your Life (Buffy the Vampire Slayer, Season 8, Vol. 4)

Willow and Buffy head to New York City to unlock the secrets of Buffy's mysterious scythe, when something goes terribly awry. Buffy is propelled into a dystopian future where there's only one Slayer - Fray, the title character of Joss Whedon's 2001 series, the first comic he ever wrote. Their uneasy alliance falls apart, leading to the death of a major character from the TV series, while back in the twenty-first century, the Scotland base falls prey to a mystical bomb courtesy of the Biggest Bad - Twilight!