This is a ファン video made によって BadFred of YouTube after being so excited によって the Spike and Illyria pairing in Spike: After the Fall. It's set to Hysteria によって ミューズ and uses clips from Buffy the Vampire Slayer and エンジェル as well as other shows.
This is an AU video set during Buffy the Vampire Slayer: Season 8 and Angel/Spike: After the Fall. Features Buffy, Angel, Spike, and it's set in Melaka Fray's future. I'll post the 説明 in comments.