Yet, in the realm of nonlinear time, it appears that there are two possible times at which Sisko and his allies can return to the station: on the day of the Cardassian Withdrawal, or on the day six years later when DS9 was destroyed. But which choice will lead to the triumph of the Prophets? And which to eternal victory for the Pah-wraiths? With time literally running out and the fate of the universe in his hands, Sisko now must confront his own personal Inferno - in order to change the past and restore the present, he must be ready to make the ultimate sacrifice...his future.