After the events of The Reforging of the Key, Willow's spell to "fix" Tara and Dawn is derailed when Dawn uses a magic pen to write a story, drawing them all into the story. To get back to the real world, they have to work together to rescue Princess Buffy. Willow's failed spell is revealed, and the Scoobies discover the reason for the new relationship between Spike, Tara, and Dawn

Set during the time between seasons five and six. Without Buffy there to anchor her in reality, Dawn begins to fade away. After the Key is remade with Spike as a secondary anchor, Buffy's spirit - granted a favor in exchange for her eventual return to life - creates a shared dream for Spike, Dawn, and Tara.