Buffy, the Vampire Slayer: Welcome to the Hellmouth (Pilot Part 1)

Buffy Summers arrives in Sunndydale, California to forget about her appointment as the "Chosen One". She tries to balance a regular teenager's life with the demands of vampire slaying, aided by the watcher, Giles, and new friends, Xander and Willow. Unfortunately, Sunnydale rests above a Hellmouth from which a master vampire is about to emerge.