Rumors of a secret alliance between the Dominion and the Klingon Empire lure Captain Sisko and the crew of the Defiant on a desperate mission into the Gamma Quadrant, leaving Deep Space None vulnerable to a surprise sneak attack!
Now an elite Klingon task force has seized control of the station, and only Chief O´Brient, Dr. Bashir, and Worf are left to defend Deep Space Nine. But Worf´s loyalties are tested when he discovers that the invaders include his oldest friend -- and his own brother!