Angel (season 1)
At the end of the third season of "Buffy", the 242-year-old, re-ensouled vampire Angel left Sunnydale to give teenage Slayer Buffy Summers the chance to live a normal life. Angel is now living in the big city of Los Angeles. With Buffy gone Angel is now completely cut off from society, every day getting closer and closer to giving in to his vampiric hunger. It's not until he befriends the half demon and fellow Irishman Doyle, who is sent visions of people in trouble by The Powers That Be, and fellow Sunnydale resident Cordelia Chase, who grounds Angel's life in the humanity around him, that he truly begins to take charge of his life and seek atonement for his past sins. He sets up his own detective agency, Angel Investigations and begins to "help the helpless".
Master (Buffy the Vampire Slayer)
Buffy and the Master finally meet in the season finale "Prophecy Girl", in which Giles translates a prophecy that states that if she fights the Master, she will die. Buffy overhears Giles discussing it with Angel and tells Giles she refuses to be the Slayer if it means she will die, then begs her mother to go away with her for the weekend. After five students are murdered by more of the Master's followers, however, Buffy decides she must fight the Master and is led to his underground lair by The Anointed One; she is wearing a long white dress, bought for a dance she was supposed to attend instead. He quickly hypnotizes her and tells her that "prophecies are tricky things" that don't reveal all: had she not come to fight him, he could not rise, as it is her blood which will free him. He bites and drinks from her, then tosses her to the ground face-down in a shallow pool where she drowns. Angel and Buffy's friend Xander (Nicholas Brendon), who have disobeyed her wishes and followed her, arrive after the Master has risen. Xander is able to revive Buffy through CPR, thus the prophecy of her death at the Master's hands is fulfilled, but its intention thwarted. She becomes stronger as a result of their encounter.