The sixth season of the television series Buffy the Vampire Slayer premiered on October 2, 2001, with a two-hour premiere on UPN and concluded its 22-episode season with a two-hour finale on May 21, 2002. It maintained its previous timeslot, airing Tuesdays at 8:00 pm ET. This season marked the series' network change from The WB to UPN. Plot After the gang struggle with using the Buffybot to patrol for vampires over the summer, Willow resurrects Buffy with a powerful spell. Although her friends believe that they have taken her out of Hell, Buffy had actually been in Heaven since her death – a fact that she initially only divulges to Spike and later reveals to her friends. She is therefore traumatized by her resurrection and this causes her to fall into a deep depression for most of the season. Dawn is happy to have her sister back, but Buffy's depression causes Dawn's feelings of alienation to lead to kleptomania. Giles returns to England after realizing that Buffy has become too reliant on him, while Buffy takes up a fast-food job for money and develops a sexually passionate, but eventually dysfunctional, affair with Spike, who discovers that his chip can no longer harm him when he hits her. For different reasons, Buffy and Spike are both emotionally tormented by the affair, and Buffy hides it from her friends, only confiding to Tara who becomes supportive. Buffy later ends things with Spike, concluding that her using him to deal with her depression is in fact killing her. Tara becomes concerned about Willow's addiction to magic and challenges her to go a week without it, but Willow gives in to her addiction, causing Tara to leave her. Despite their separation, Tara is still devoted to helping Willow with her addiction, leading to their reconciliation. On the wedding day of Xander and Anya, a magician, seeking his own vengeance against Anya, tricks Xander into calling off the wedding by showing him a false future where they are both miserable. Anya reverts to a vengeance demon once more. When Anya cannot find anyone who wishes vengeance on Xander, and after Buffy has broken up with Spike, Anya and Spike seek solace in a one night stand, making both Buffy and Xander furious at Spike, especially for revealing his affair with Buffy. The gang also begin to deal with The Trio, a group of nerds