DS9 S4E23 - To the Death

The Defiant returns to the station to discover a renegade band of Jem'Hadar have attacked the station. The Defiant goes to the Gamma Quadrant to hunt them down and finds a disabled Jem'Hadar fighter, also a victim of these renegades. Their Vorta, Weyoun, does something completely unexpected and asks for help to stop them. The renegade Jem'Hadar have found an Iconian gateway and if they can learn to use it, would be an unstobbable force. Now the Federation and Dominion must work together to stop them.