Buffy The Vampire Slayer (1997) - 5x02 - Real Me

Buffy's little sister puts forward her view on the slayer and her friends and feels nothing but contempt for all of them apart from Xander. Dawn feels in the way when Buffy complains about having to take her school shopping when she is supposed to be training with Giles. While on patrol, Buffy leaves Dawn with a babysitter, Xander and Anya, but she accidentally invites Harmony into the house which Buffy does not respond to kindly. Harmony kidnaps Dawn to draw Buffy into a trap and Buffy is obliged to save her sister, as usual.
Meanwhile, Giles takes up tenancy in the recently vacated magic shop in order for him to slip back into the role of Watcher.