When Buffy gets a job at the Doublemeat Palace, a local fast-food restaurant, she begins to believe that disappearing co-workers and the secret ingredient to the restaurant's hamburger may be connected.

After Dawn talks to a guidance counselor about her feeling lonely, she accidentally puts a spell on Buffy and her friends, trapping them inside the Summer's house with a sword-wielding demon.

Anya and Xander's wedding is thrown into turmoil when a man claiming to be Xander's future self turns up at the ceremony.

Anya returns to Sunnydale, bent on revenge for Xander leaving her at the altar. She has since become a Vengence demon again, but ends up hurting Xander in a way she never expected.

Sunnydale High is re-opened, with a new designed campus and a new principal, Robin Wood. It is Dawn's first day at school there and Buffy accompanies her to class, only to discover evil spirits lurking in the basement.

Anya's violent and deadly act of vengeance leaves everyone stunned. Buffy must put aside her feelings and take action before more people die.