Novelization of the two-part episode of the on the Star Trek Deep Space Nine television show.
"The entire Alpha Quadrant has been threatened with deadly infiltration by the shape-shifting Founders of the Dominion. Already the Romulans and Cardassians have been decimated by the clandestine machinations of the Founders. Now the newly promoted Captain Benjamin Sisko has another problem: a massive fleet of Klingon warships has arrived at DS9 on a secret mission. Unable to learn anything from an elusive Klingon general, Sisko turns to Lt. Commander Worf to try and uncover the truth. What Worf learns has a profound impact on the future of the Alpha Quadrant, and Sisko must risk destroying the Federation-Klingon alliance to prevent a full-scale war."
Note: Elim Garak plays an important role.