Sisko fulfills the Prophets' destiny for him in the series finale, "", by confronting the Kosst Amojan-possessed Gul Dukat. They fight, and Dukat seems to be the winner, but in a last effort, Sisko throws himself and Dukat into the fiery abyss of the Bajoran Fire Caves, and Sisko is pulled into the Prophets' plane of existence to live with and learn from them. Sisko imparts a farewell to his new—and pregnant— wife, Kasidy Yates, informing her that although he does not know when, he will eventually return to her.