Two desperate hunts stalk the dark woods that shroud Einzbern Castle, as Lancer and Saber confront the hideous sorcery of Caster, incarnation of the fiendish Gilles de Rais, while Irisviel follows Maiya in search of the master magician Kirei. Is mage killer Kiritsugu risking both his wife and his mistress in a cold-blooded scheme to assassinate Kirei . . . ?