Buffy summers The chosen one who is to stand alone against the vampires and the demons of the world, she alone is the slayer. Book one exemplifies the "high school is hell" concept. Buffy Summers has just moved to Sunnydale after burning down her old school's gym, and hopes to escape her Slayer duties. Her plans are complicated by Rupert Giles, her new Watcher, who reminds her of the inescapable presence of evil. Sunnydale High is built atop a Hellmouth, a portal to demon dimensions that attracts supernatural phenomena to the area. Buffy befriends two schoolmates, Xander Harris and Willow Rosenberg, who help her fight evil throughout the series, but they must first prevent The Master, an ancient and especially threatening vampire, from opening the Hellmouth and taking over Sunnydale.