The Federation Alliance goes on its first major offensive against the Dominion since the retaking of DS9: the taking of the Dominion shipyards in the Chin'toka system. Meanwhile, Dukat returns to Cardassia Prime with a plan of his own - one that he believes will not only allow the Dominion to again use the wormhole, but will strike a blow against the Emissary as well.
This episode contains examples of:
- Apologetic Attacker: Dukat to Jadzia.
- Call Back: Sisko's baseball once again serves the Rule of Symbolism. At the end of the previous season, he left it on his desk, as a message to the Dominion that he would be back. Here, he takes it with him, not sure if he is coming back.
- Cannot Keep a Secret: Jadzia, when Bashir and Quark wonder what she and Worf were talking about in the holosuite:Worf: It is a private matter.
Jadzia: We're thinking about having a baby!
Worf: It was a private matter.
- Curb-Stomp Battle: Zigzagged. When the allied ships reach Chin'toka before the weapon platforms are online, they easily destroy the platforms. Then the platforms activate and begin tearing into the allied ships—until O'Brien tricks them into destroying their power source, at which point they go dead. The Alliance then easily takes Chin'toka.
- Death Wail: The return of the Klingon Death Roar, under particularly horrible circumstances.
- Downer Ending: Oh boy...
- Dropped a Bridge on Her: Jadzia dies rather casually and arbitrarily. This becomes a plot point in the next two episodes, as Worf grouses about Jadzia not getting an honorable death and tries to ensure a great victory is accomplished in her name.
- Easily Forgiven: Dukat bears Damar no ill will for what happened to Ziyal, insisting that it was instead Sisko's fault.
- Famous Last Words: "Our baby would have been so beautiful." - Jadzia
- Genre Savvy: Weyoun is pissed when he learns the wormhole has been closed, but Dukat insists that cutting Sisko off from the Prophets is a great victory. The next episode shows he was right, as the course of the war changes.
- Heroic B.S.O.D.: Sisko goes into one after Jadzia dies and the Prophets disappear.
- Hypocritical Humor:Weyoun: Pah-Wraiths and Prophets...all this talk of gods strikes me as nothing more than superstitious nonsense.
Damar: You believe that the Founders are gods.
Weyoun: That's different.
Damar: In what way?
Weyoun: The Founders are gods.
- Keystone Army: Taking out the defense grid's power generator shuts down all the weapons platforms at once.
- Kill Sat: The Dominion's orbital weapon platforms.
- Killed Off for Real: Fan favorite Jadzia Dax, murdered in cold blood by a Pah-Wraith-infested Dukat.
- My Significance Sense Is Tingling: Sisko when the Pah-Wraith invades the wormhole.
- No Sell: As long as the weapon platforms and their power source have their Deflector Shields up, the allied ships can't even scratch them.
- Nothing Personal: How Dukat views killing Jadzia. He was only targeting the orb, and she was in the wrong place at the wrong time.
- Pyrrhic Victory: Cardassia has been breached by the joint Federation-Romulan-Klingon forces. But Jadzia is dead, the wormhole is gone and Sisko leaves the station.
- Ramming Always Works: The Jem'Hadar fighters ram Martok's ships to buy time for the defense grid to activate.
- Red Eyes, Take Warning: When Dukat is possessed by the Pah Wraith, his eyes turn red.
- Talking to the Dead: Sisko speaks to Jadzia's coffin near the end of the episode.
- Unfriendly Fire: O'Brien tricks the weapon platforms into firing on their own power generator.