While returning to Deep Space Nine with the Bajoran Orb of Time, the crew is thrown back to the 23rd Century. They must infiltrate the original Starship Enterprise in order to stop an undercover Klingon from assassinating the legenday Captain James T. Kirk.
Sisko faces thousands of Dominion warships alone in an attempt to regain Deep Space Nine. Kira, Jake and Leeta are suspected of trying to stop the attempts at disabling the minefield and are held for questioning. Everything seems doomed and everyone makes ready for a final stand.
Major Kira makes a shocking discovery while trying to uncover the identity of a suspected Cardassian war criminal.
Sisko launches the Federation/Klingon/Romulan attack against the Dominion on Cardassia. Kira, Damar and Garak destroy a power supply on Cardassia as the Cardassian population rises against the Dominion. Kai Winn asks Gul Dukat to join her in releasing the Pah-wraiths from the Fire Caves. Bashir and Ezri spend the night together on the eve of the war. The Founder Leader orders the execution of Damar, Garak and Kira after Jem'Hadar forces capture them; however, Cardassian forces free them. Meanwhile, on Bajor, Kai Winn recites from the Kosst Amojan in an attempt to release the Pah-wraiths.moreless
Odo struggles with his choices between his friends and the Link. Sisko faces a suicide mission in order to reclaim Deep Space Nine. Rom is ordered to be executed. Kira and Damar come to blows over Ziyal and Gul Dukat.
Several months after Deep Space Nine was handed over to the Dominion, the Federation is losing the war. Being relieved of command of the Defiant, Sisko is placed in command of the salvaged Jem'Hadar warship they discovered several months earlier, and must destroy the main Ketracel-White production facility in the Alpha Quadrant. The mission is a success, but it leaves the ship without warp engines and stranded 17 years from the nearest Federation Starbase.
After Sisko is promoted to Captain, he and the Defiant crew are manipulated by a Changeling posing as an ambassador.
Sisko plans an attack that will allow them to tap in to the Dominion's communication array in the Alpha Quadrant on the planet AR-558. He must also find a way of revealing the 'Houdinis'; mines which hide themselves in subspace and explode without warning.
Starfleet Command places Sisko in command of Starfleet Security, as they believe that Changelings may have infiltrated Earth.
Sisko takes command of a new ship named in honor of the Defiant, while Kira, Garak and Damar barely survive a Dominion ambush on Cardassia Prime. Bashir and Ezri reveal their attractions for one another over coffee. Quark is appointed Zek's successor, and he is determined to overthrow new democratic changes that have just been implemented into Ferengi society. Garak, Damar and Kira successfully plant a bomb in Dominion barracks on Cardassia. In a shock turn of events, Zek appoints Rom as the new Grand Nagus of Ferenginar, despite Quark's earlier announcement.moreless
The Dominion War is entering its final stages, with many surprises. Meanwhile, in the Fire Caves, Kai Winn and Dukat continue their efforts to release the Pah-wraiths. Can they and the Dominion be stopped? Things look grim for the Federation and the crew of Deep Space Nine.
The future of peace at stake when a band of renegade Jem'Hadar discovers an ancient Iconian Gateway, which can enable them to launch attacks anywhere in the galaxy. In order to stop them, the crew of the Defiant must team up with a band of Jem'Hadar still loyal to the Founders. However, working together may prove more difficult than imagined.
Sisko is promoted, and Dax is placed in command of the Defiant. She must disable a Dominion sensor array that has been monitoring all traffic within five sectors. Meanwhile, on Deep Space Nine, now named Terok Nor, Kira must find a way of preventing the minefield from being destroyed. Odo's loyalties are questioned when he physically joins with the Founder Leader.
Captain Ben Sisko takes command of the Bajoran space station Deep Space Nine, formerly Terok Nor, recently abandoned by the Cardassian Empire. The discovery of the first stable wormhole, controlled by time-independent aliens, worshipped by the Bajorans as gods (called Prophets), gives Sisko religious significance as the aliens Emissary. This is part two of the two hour pilot, which was later cut into two episodes. This half of the pilot focuses on developing a relationship between Sisko and the wormhole aliens and positioning the space station prominently near the wormhole.
Sisko is forced to evacuate the station when the war escalates and turns in favour of the terrorists.
Stardate: Unknown Worf attempts to win a battle by destroying a Dominion shipyard to guarantee Jadzia's spirit a place in Sto-vo-kor, the Klingon afterlife. Ezri wishes to join Ben, Joseph and Jake Sisko on their hunt for the Bajoran Orb of the Emissary. After discovering the Orb, and opening the case, the Wormhole is re-opened and the Orbs are reactivated. Sisko learns that a Prophet, to ensure his birth and guarantee his destiny, possessed his mother. Kira must find a way of preventing the Romulans from building weapons on the Bajoran moon where they claim they are building a hospital.moreless
Commander Benjamin Sisko takes command of the Bajoran space station Deep Space Nine, formerly Terok Nor, recently abandoned by the Cardassian Empire. The discovery of the first stable wormhole, controlled by time-independent aliens, worshipped by the Bajorans as gods (called Prophets), gives Sisko religious significance as the aliens' Emissary.
Stardate: 49300.7 A transporter accident traps the senior crew of Deep Space Nine in Bashir's James Bond-like holodeck scenario, with each one taking the role of different characters.
After luring Section 31's Sloan to Deep Space Nine, Bashir and O'Brien enter his consciousness to find a cure for Odo's illness.
O'Brien befriends an alien who belongs to a race of beings that are bred to be hunted by another species.
During negotiations with the Karemma, the Defiant is attacked by the Jem'Hadar. After a short battle, the Defiant is left drifting in a hostile atmosphere, with Sisko critically injured. Meanwhile, the Jem'Hadar are still looking.
Miles O'Brien unknowingly triggers an old and forgotten booby trap that releases a potentially fatal virus throughout the station. This Aphasia virus results in the crew only being able to speak in gibberish, before inducing a coma in the victim.
Sisko and Kira are possessed by alien forces and fight for control of the station.
Quark enters into the booming business of arms dealing with his cousin. However, his new enterprise may cost him his life.
Major Kira's loyalties are questioned when she helps an old friend, now a suspected terrorist trying to destroy the Bajoran Wormhole, who seeks asylum on DS9.
Quark puts everything at stake to win back his long love Natima Lang, a Cardassian woman suspected of terrorism on Cardassia.
Q arrives on DS9 fresh from exploring the Gamma Quadrant with Vash. Soon afterwards, power fluctuations grip the station.
Mob hysteria grips the station when Odo is suspected of committing a murder after a Bajoran's body is discovered.
Stardate: 49665.3 Worf faces extradition to his homeworld when he destroys a Klingon transport and is solely responsible for the deaths of the 441 passengers.
Stardate: 51825.4 Nog and Jake are rescued by the U.S.S. Valiant when their ship is attacked by the Dominion while on their way to Ferenginar. The crew of the Valiant consists of the Starfleet Cadet corps known as 'Red Squad,' an elite band of cadets, after the main crew were killed when the Dominion War broke out. They decide to complete their mission, which Jake sees as suicide.moreless
While evaluating a Trill initiate for the first time, Lieutenant Dax accidentally discovers a proto-universe whose rapid expansion threatens not only the station, but the entire Alpha Quadrant and beyond.
Bashir is possessed by an alien criminal who attempts to hijack a Gamma quadrant freighter filled with deuridium.
When Vedek Bareil is critically injured during negotiations, the only thing that will keep him alive long enough to complete the meetings is a radical operation that will turn him into a half-man, half-machine.
When Quark is caught cheating by an alien delegation from the Gamma Quadrant, they exact revenge by turning the senior crew into the playing pieces of a game of life and death. Only Quark can save their lives.
Stardate: 49702.2 A pregnant Lwaxana Troi arrives on Deep Space Nine, distressed over the prospect of having her child taken away by its Tavnian father. In order to assist her in keeping her child in accordance with Tavnian law, Odo offers to marry her. Meanwhile, Jake finds inspiration in Onaya, an alien woman with sinister motives.moreless