Sisko begins having visions that may show him how to best help Bajor, but they're killing him.
Captain Sisko and Major Kira retrieve a lost painting from the occupation, Sisko hears a prophecy that he can unlock a legendary lost city in Bajoran mythology and while trying to use the computer to save a scanned image of the painting, he suffers shock from the holosuite and starts having health problems and visions of the lost city.—Jared Johnson