Police and paramedics are on the scene at the Summers' house, investigating the aftermath of Buffy and Faith's battle. Faith is brought out on a stretcher as a detective thanks Buffy for somehow knocking her unconscious. When he calls Faith a kid though, Buffy becomes defensive and retorts that she's tougher than he thinks. Faith has obviously transferred her spirit into Buffy's body with the Mayor's amulet.
Back in the living room, Joyce can't understand why her "daughter" is acting so cold and shallow. She can't even bring herself to hug Joyce. Faith, in her new body, retires to take a bath and explore herself. She looks in the mirror and practices acting as Buffy-like as possible. For the most part she overdoes it though and ends up looking foolish. The real Buffy wakes up in the hospital in Faith's body. When she tries to go save her mother, the police restrain her and load her full of sedatives. Back in Tara's room, she and Willow discuss their "relationship". Willow explains that she hasn't introduced her to her friends yet because she likes to have something that is just hers. Tara reassures her that she is hers. Meanwhile, Faith goes through Buffy's room and tries on her clothes. When she comes across Buffy's wallet, she orders a flight for 10 am the next morning. Joyce informs her that Giles and the gang are waiting to meet her at Giles'. Faith decides she wouldn't mind seeing what her enemies are up to and leaves to head over. The real Buffy is simultaneously waking up again, this time in the backseat of a police car. Suddenly, the police car is rammed by an armored truck and the cops knocked unconscious. The same men who met at the hospital after Faith came out of her coma, jump out of the back of the vehicle. They smash the police car window and drag the girl they think is Faith, out. The stone-faced men inform her that she is under arrest in the name of the Watcher's Council.
Back at Giles' house, Faith enters and greets the unwitting gang. Giles informs them that "Faith" has been extracted to England by a Council Retrieval Team. When Willow announces her repulsion of Faith, Faith does everything she can to act natural and restrain from killing Buffy's friend. That night, Faith takes advantage of her new sexy body, by cutting a rug at the Bronze. She runs into Spike who just assumes it is the same old Buffy. But instead of her normal righteous self, this Buffy rubs against Spike, titillating him. She tells him she could "have him" if she wanted and then leaves him frustrated, angry, and thirsty for revenge. Elsewhere, a group of marauding vampires enter their lair to find Adam waiting for them. When one of them attacks, Adam easily defends himself, tearing the vamp's head clean off. He tells the other four bloodsuckers that he has a plan to help them unite.
Under the guard of the Watcher Retrieval Team, Buffy tries to convince the men that she's not Faith. The less-than-professional soldiers just mock and spit on her. Back at the Bronze, Willow and Tara arrive to hang out. Willow sees "Buffy" and decides to finally introduce her to Tara. Faith decides to have a little fun with Tara when Willow leaves them alone to get a drink and mocks the apparent feelings she has for her Wicken companion. Suddenly, Willow returns and points out a vampire leaving the club with an oblivious girl. Faith, forced to act as Buffy would, leaves in pursuit. She slays the vampire in the parking lot with a broken pool cue and helps the girl to her feet. When the shaken young lady thanks her sincerely for saving her life, Faith seems to feel good about it for a split second. When she returns inside, Willow announces that she is taking her friend home because she isn't feeling well. When she mentions Riley, Faith decides to leave too and pay Buffy's boyfriend a visit.
When Willow and Tara arrive at Tara's room, they discuss "Buffy's" behavior. Tara feels that the energy she gave off was fragmented and Buffy couldn't have been her normal self. The two Wickens decide to perform a ritual that opens a passage to the netherworld where Willow could visit Buffy's body on an astral plane and investigate her inner self. Meanwhile, the outer self of Buffy is busy turning Riley on. When Faith gets a little too kinky though, Riley starts to suspect something is wrong with his normally conservative girlfriend. Before he can question her, Faith seals his lips with a more romantic kiss. Later, when they rest in a post coital embrace, Willow and Tara's ritual begins to take effect. Surrounded by a ring of energy, Willow's spirit leaves her body and enters Buffy's. Faith rolls out of bed and questions the other inhabitant of Buffy's body. Riley watches confused as his girlfriend argues with herself schizophrenically. Faith seems to finally suppress Willow's intrusion and return to bed.
In a subterranean cave, Adam lectures to his new pupils. He wants to use his small vampire posse to spread the word of his coming apocalyptic attack on humanity. The next morning, Faith leaves Riley's room before he wakes up. On her way out the door, Forrest confronts her about disturbing Riley while he recovers from his injuries. When he criticizes her profession by calling her a killer, Faith finds herself defending what Buffy does. Confused about why being called a killer offended her, she storms out the door to catch her flight. At the shipyard, Buffy makes a flight of her own. When one of the guards reaches a tranquilizer gun into her room, she grabs it with her feet and kicks the guard in the head. After a couple more slick moves, she jumps into the driver's seat of the armored truck they picked her up in and drives it through the front of the shipyard warehouse. When she shows up at Giles' house in Faith's body, her ex-Watcher is understandably shocked. To prove it is her, Buffy lists things that only she could possibly know about Giles, like the fact that he had sex with her mom. Just then Willow and Tara show up. They show Buffy and Giles a Katra they conjured which is a small, glowing green orb they have in a charm box. Willow explains that all they have to do is bring Buffy and Faith together to employ the Katra which will switch their spirits back to their rightful bodies. Suddenly they notice a breaking newscast on Giles' television. A group of citizens are being held hostage in a church by unknown assailants. At the airport, Faith is watching the same newscast.
Inside the church, the vampires that Adam took under his wing are the ones tormenting the frightened Sunnydale locals. When Faith shows up outside, she runs into Riley who still thinks she is Buffy. When she tells him she wants to go inside and do some slaying, Riley tries to stop her from entering alone. Faith shrugs him off and goes in anyway, driven by some force to help the innocent people inside. She takes on Adam's followers in a grueling fight that rumbles throughout the church. After slaying three of them she is pinned down by the leader. Out of nowhere, Buffy stakes him from behind. But rather than thanking her, Faith attacks Buffy. After a knuckle-splitting flurry, Buffy is able to grab Faith's hand and switch their bodies back with the power of the Katra. Faith, now in her original body, jumps up and runs out of the church. Later, in Riley's room, Buffy explains to him what happened. She is angry to find out that Riley unknowingly slept with Faith, but relieved with the knowledge that she probably won't be returning for a while. Meanwhile, somewhere far away, Faith somberly rides across the countryside in the boxcar of a train she apparently hopped leaving Sunnydale.
Episode Synopsis by: Zack Peacock