Faith is approached by Giles with a dangerous assignment—to pose as a British aristocrat in order to assassinate a wealthy, rogue slayer under the tutelage of an Irish warlock. Meanwhile, Buffy frets about the coming of Twilight and the meaning of an ominous dream.

Posing as a viscount's daughter, Faith infiltrates Lady Genevieve's gala and is attacked by Roden's gargoyle security team. Elsewhere, Willow offers to Dawn with her plus-sized problem and is called upon to upgrade the castle's defense system. Finally, after bonding with Faith, Genevieve reveals her evil plan.

As Giles tries hopelessly to contact Faith, Lady Genevieve explains her rationale for wanting to assassinate Buffy. Buffy is unwittingly teleported to Genevieve's estate, where the two slayers engage in deadly combat, until the internally-conflicted Faith intervenes.