Coyote Moon

In every generation, there is a Chosen One. A slayer destined to protect the human race. She alone must fight the demons of hell. She alone must risk her life to stop the spread of evil.
Buffy is the Chosen One.
In Coyote Moon, a typical night at the carnival becomes deadly as shape shifters turn the amusement park into their own house of horrors.
Buffy starts having past-life nightmares in Night of the Living Rerun, and must face her historic counterpart before the events of the past repeat in the present.
In Portal through Time, Slayers over the centuries are in danger, and Buffy must protect them in order to save her own life and legacy.