In Angel season four, Angel is reverted to the evil Angelus after having his soul removed.
The storyline is continued in the first season of spin-off series Angel, as Faith escapes to Los Angeles and is hired by to assassinate Angel.
In the underbelly of London, where demons are coping with the lack of magic and the resulting changes to the natural hierarchy, Angel and Faith follow the first major lead in Angel's quest… Forcing him to reflect on his earliest days in Los Angeles.
Angel and Faith must rally the remaining slayers if there is any chance to defeat this cunning demon! In these episodes, she reconciles with Buffy, although their relationship is tested when the appoint Faith as their leader over Buffy.
If you continue on this course, many divine signals will reveal themselves and show you the way.
On the dark side of the moon, Spike embraces some peace, quiet, and distance from the Slayer.