Angel: "Just kidding. He has a soul now and he cares about people." Holtz: "Kill them!" Sixteenth century! What's he do?" You mean back in the day.
Plan: A: Buffy's death; Q: What is Angel mourning? A: battle; Q: What must Angel do against a vampire? A: friends; Q: What was Angel and the vampire he is fighting? A: 18'th century; Q: In what century did Angel and the vampire he is fighting meet? A: Marseilles; Q: Where did Angel and his friend meet? Summary: Even as Angel mourns Buffy's death, he must do battle against a vampire he was friends with back in 18'th century Marseilles - and whose girlfriend he has just killed.