Each season of "Buffy the Vampire Slayer" (often simplified as "Buffy") presents an overall story arc which episodes tie into, as well as a specific manifestation of evil known as the Big Bad. As noted by "Buffy" scholar Roz Kaveney, episodes in the fourth season address authority, order, and the estrangement from the self and others as Buffy and her friends take on new roles after high school. An ongoing theme in the series is Buffy's complex relationship to her destiny as the current Slayer and how she uniquely expresses this role, and this plot element is further explored in season four in general, and in the episode "Restless" in particular.