The premise of "Buffy the Vampire Slayer" is that an adolescent girl, Buffy Summers, is chosen by mystical forces and given superhuman powers to kill vampires, demons, and other evil creatures in the fictional town of Sunnydale. She is supported by a close circle of family and friends, nicknamed the Scooby Gang. "Restless" centers on the dreams of the four main characters after enduring an exhausting fight in the previous episode. The dreams are used to comment on the characters—their fears, their past and their possible future. Consistent with each dream is the presence of the First Slayer who hunts and kills them one by one until, in the final sequence, she is confronted and disempowered by Buffy.