After breaking up with Tara, Willow successfully de-rats Amy and the two witches begin hanging out and having fun with magic, drawing Willow further into her growing addiction. Meanwhile, Spike notices that his chip doesn't kick in when he hits Buffy, at first he thinks the chip doesn't work anymore at all. Then he tries to get friendly with a human's neck and he gets his big old brain zap. He heads over to Warren, who built his Buffybot for him, to get his chip checked out. He declares it all systems go. This makes him realize that it's just Buffy that he can hit, leading him to believe that she may not be entirely human anymore.
Buffy: Your job is to kill the Slayer, but all you can do is follow me around making moon eyes!
Spike: I'm in love with you.
Buffy: You're in love with pain!
Of course, Warren and the rest of the nerd trio have their own thing going on. They steal a big diamond from a local museum we've never heard of before, and we don't find out why yet.
Spike meets up with Buffy to tell her she's come back wrong. Since he can now hit her, he decides he wants to take advantage of it. They fight and fight and fight and end up in an old dilapidated building. As the fight gets really heated, she kisses him. Then they progress to slamming each other into the building while making out, thus destroying the building even more.Â That sexual tension builds so much that Buffy jumps on Spike, unzips his pants and she goes to town, while Spike is looking at her with his moon eyes in awe.
Tara and Amy fell asleep on the couch and woke up the next morning wondering where Willow and Buffy are. Neither came home from their nights out. When they do return home, Buffy is ashamed of having slept with Spike and Willow is exhausted from casting spells all night. Dawn is really starting to look like she's feeling super neglected. Everyone seems to have their own things going on, leaving her in the lurch.
Buffy: Oh you're bent.
Spike: Yeah, made you scream didn't it.
As an odd observation, Anya is now suddenly platinum blonde and she's also in full wedding planning mode.
Amy takes Willow to a sorcerer named Rack who is basically dealing in some major magicks. It seems like in one trip, Willow is suddenly a junkie for the stuff. Later, in a way to make up being out, Willow takes Drew to dinner and a movie. The only problem is they never make it to the movie. Willow makes a quick stop to Rack with Dawn in tow. She leaves Dawn waiting for hours and comes out high as a kite. Then proceeds to steal a car and drive it magically when a demon thingy comes after them. She's not even physically driving and yet she's driving like she's drunk. Major problem comes when she wrecks the car with Dawn in it, and breaking Dawn's arm.Â Buffy and Spike roll up on them and Buffy is pissed. Rightfully so.
Buffy and Dawn clear the house of magick items and supplies to help Willow, and Buffy has a surprise visit from a social worker checking on Dawn's home life. The meeting doesn't go well and in a fit of rage afterwards, Buffy cuts off her hair. Meanwhile, the Geek Trio have built an invisibility ray with that diamond they stole and accidentally hit Buffy with it.
Spike: (to invisible Buffy) You should leave. Get dressed, if you can find your clothes, and bugger off. Because if I can't have all of you, I... (looks down) Hey, that's cheating.
She takes great joy in this ability. She goes to the social worker's office and make her think she's going mad. She also does a quick little edit of Dawn's file so she's not at risk of losing custody of her. She steals a parking cop's little golf-cart thingy, and she head's over to Spike's to have a little bit of nekkid & invisible sex. Seeing Spike having sex in a bed, with what looks like himself, is just beautifully classic. Especially since Xander catches him in this oddness.
However, the fun must end. The Gang find that other things that were turned invisible are disintegrating and so will Buffy if they don't get a cure for her. They track down the trio's black van, and find the guys and their invisibility ray. They get it reversed, and get Buffy back to normal. They also find out that the trio is claiming to be Buffy's new archnemesisises.