Stardate: 49011.4. When the Klingons bring a task force to DS9, Captain Sisko sends for Starfleet's lone Klingon officer, Worf, to uncover the mysterious intentions of their presence.

Stardate: Unknown. Melanie, an aspiring writer, wants to know why Jake Sisko stopped writing at 40. Jake tells how his father died in an accident and then suddenly reappeared.

Stardate: 49066.5. Bashir is asked to help a group of renegade Jem'Hadar break their addiction to ketracel white. Meanwhile Worf is dissatisfied with the way Odo runs security.

Stardate: Unknown. Kira and Gul Dukat go after the lost prison ship Ravinok. Dukat has a secret. Meanwhile Kasidy Yates tries to find work near Bajor, leaving Sisko uncomfortable.

Stardate: 49195.5. Lenara Kahn, the new host of the wife of Dax's former host Torias, comes to the station. While they're not allowed to renew their relation, there's still a spark.

Stardate: 49263.5. A damaged Defiant must play a dangerous game of cat-and-mouse with two Jem'hadar ships inside a gas giant.

Stardate: Unknown. Quark and Rom take Nog to Earth and Starfleet Academy, but a malfunction with the ship takes the crew back in time, to Roswell New Mexico in 1947.

Stardate: Unknown. Worf, Dax and the Klingon Dahar master Kor set out to find an ancient lost relic: the Sword of Kahless.

Stardate: Unknown. When an transporter emergency turns the command crew into holosuite characters, Bashir's James Bond fantasy takes on a deadly reality.

Stardate: 49170.65. Sisko travels to Earth when a bombing at a Federation conference is determined to be the work of Changelings.

Stardate: Unknown. When Starfleet institutes martial law to combat the Changeling Menace, Sisko begins to question if the Dominion is the real threat.

Stardate: Unknown. First Minister Shakaar visits the station, despite a threat of assassination. He falls in love with Kira much to Odo's dismay.

Stardate: Unknown. Dukat returns, stripped of his prestige, to escort Kira to a Cardassian conference about the Dominion. But an attack by a Klingon raider may give Dukat a chance to redeem himself in the eyes of his government.

Stardate: 49556.2. Worf's brother Kurn asks him to perform a death rite to regain his lost honor. Meanwhile Kira and O'Brien investigate Klingon activity near the Bajoran border.

Stardate: Unknown. Unfair working conditions and pay cuts cause Rom to organize a union of the employees of Quark's Bar. Meanwhile Worf still finds it hard to settle on the station.

Stardate: Unknown. A man claiming to be the emissary comes through the wormhole. Sisko is happy to give up his position. Meanwhile Keiko returns and O'Brien stops spending time with Bashir.

Stardate: 49665.3. When Worf destroys a civilian shuttle during an engagement with the Klingons, an extradition hearing is held to see if he must face charges.

Stardate: Unknown. O'Brien tries to re-integrate to life on the station after serving 20 years in a virtual prison.

Stardate: Unknown. When the Mirror Universe counterpart of Sisko's deceased wife lures Jake to the other side, Sisko must follow and help the human resistance against the Alliance's forces.

Stardate: Unknown. A mysterious woman approaches Jake about his future as a writer. Odo promises to do whatever it takes to help Lwaxana Troi keep her baby over the father's wishes - even if it means marrying her himself.

Stardate: Unknown. Sisko must face betrayal when evidence surfaces that Kasidy is smuggling for the Maquis. Meanwhile Garak makes acquaintance with Ziyal.

Stardate: 49904.2. A renegade group of Jem'Hadar plunders Deep Space Nine. Sisko agrees to a combat operation with loyal Jem'Hadar to prevent the renegades completing a planetary gateway.

Stardate: Unknown. Bashir tries to help a planet in the grips of a Dominion-engineered plague that guarantees a painful death.

Stardate: Unknown. Quarks hears on Ferenginar he is going to die. Rom convinces him to sell his remains. After an accident, Bashir has to move Keiko's baby to Kira's womb.

Stardate: 49962.4. Odo is suddenly struck by illness. He is barely able to hold shape. Bashir and Odo see no other alternative then going to the Founders. Garak wants to come along.

Stardate: Unknown. With the war between Klingons and Federation intensifying, Sisko must make a plan to expose Gowron as a changeling. Odo is still having trouble with becoming a solid.

Stardate: 50049.3. The crew find a crashed Jem’Hadar ship and work to repair it and capture it for the Federation, but are confronted by a Dominion force determined to recover the ship’s cargo.

Stardate: Unknown. While Worf helps Quark to pursue his former wife Grilka, O'Brien and Kira grow uncomfortably close to each other.

Stardate: Unknown. Jake, reporting from the front lines, sees what war truly is.

Stardate: Unknown. An alien entity has possessed Keiko's body and is holding it hostage until O'Brien completes an assignment for it.

Stardate: 4523.7. In this celebration of the 30th anniversary of The Original Series, the disgraced Klingon spy Darvin travels back in time to undo his century-old defeat by James Kirk. The DS9 crew must track him down and stop him, while blending in with the crew of the original Enterprise NCC-1701.

Stardate: Unknown. While vacationing on Risa, Worf and Dax meet a group of fundamentalist protesters who claim that the Federation has gone soft.

Stardate: Unknown. Sisko, Dax, Odo and Garak find themselves in the past when the Cardassians controlled the station, and a crime that Odo investigated may be the key.

Stardate: Unknown. When Odo and Quark crash land, they must put aside their differences to climb a mountain to signal for help. Jake and Nog try to be roommates, but their different styles clash.

Stardate: Unknown. After a brain injury, Sisko begins experiencing powerful visions through time. He dives fully into the role of the Emissary, while becoming obsessed with finding a legendary Bajoran ruin.

Stardate: 50416.2. A mysterious assassin begins wiping out all the members of Kira's old resistance cell.

Stardate: Unknown. The discovery of an infant Changeling gives Odo a chance to put right the trauma of his own upbringing, while his “father” Dr. Mora insists on a more clinical approach.

Stardate: 50485.2. When the traitorous Eddington returns, Sisko will go to any lengths to capture him.

Stardate: Unknown. A coded message from the Gamma Quadrant leads Garak to believe his mentor, Enabran Tain, is still alive. He and Worf seek him out, only to discover something much worse: a Dominion invasion fleet poised to attack the Alpha Quadrant.

Stardate: 50564.2. The station readies for a Dominion attack. Worf and Garak meet some unexpected friends in a Dominion Prison camp.

Stardate: Unknown. Dr. Bashir is selected to be the model for the next-generation of Emergency Medical Hologram (EMH). But he balks when his parents are invited to the station to be interviewed by the EMH programmer, Dr. Zimmerman. There is a dark secret in his family that he's afraid that his parents will reveal.

Odo helps a woman hiding on the station from organized criminals, but quickly develops a personal interest in the case.

Stardate: Unknown. Quark must wrestle with his conscience when he becomes involved with arms merchants.

Stardate: 50712.2. When a Cardassian official that thinks of Kira as his daughter is dying, he agrees to reveal all he knows to her. But the experience dredges up Kira's memories of her own father's death.

Stardate: Unknown. Quark doesn't know whether to be panicked or overjoyed when he learns that his mother is the new lover of the Grand Nagus.

Stardate: Unknown. Dax and Worf accompany Martok on his first command since being held by the Dominion. But the ship they are given hasn't seen victory in months and the crew is near mutinous.

Stardate: 50814.2. The DS9 crew discovers a colony that, due to a time travel accident, turns out to be inhabited by the crew's own descendants.

Stardate: Unknown. Sisko learns that the Maquis are planning a devastating attack on Cardassia, and must rely on the traitor Eddington to help him prevent it.

Stardate: Unknown. While salvaging components from DS9's sister station, the crew run afoul of a "surprise" left behind by the Cardassians.

Stardate: 50929.4. Jake has his heart set on a vintage Willie Mays baseball card as a present to cheer up his father, whose spirits are flagging from the ongoing conflict.

Stardate: 50975.2. Sisko decides to mine the wormhole to prevent further Dominion ships crossing into the Alpha Quadrant. This provokes an attack by the Dominion and the Cardassians, and a desperate last stand on Deep Space Nine.

Stardate: Unknown. As the war between the Federation and the Dominion continues, Sisko and his crew are reassigned from the Defiant, while Kira and Odo cope with the bureaucracy of the station's occupation.

Stardate: Unknown. Sisko and his crew are marooned on a barren planet with a squadron of Jem'Hadar soldiers and their wounded Vorta overseer. But when the Vorta seeks out Sisko to make a deal, can he be trusted? And should Sisko accept the treacherous proposal?

Stardate: Unknown. Worf and his son Alexander must come to terms with one another when Alexander is assigned to the Rotarran and voices his intentions to become a warrior. Meanwhile, Kira finds herself between friend and foe when Ziyal returns to the station and reconciles with her father.

Stardate: 51145.3. Odo finds his priorities at odds with Kira's resistance efforts when the Female Changeling comes to him and offers to guide him in learning about the Great Link.

Stardate: Unknown. On the eve of Dukat successfully disabling the minefield, Sisko coordinates a massive assault to retake Deep Space Nine.

Stardate: Unknown. The Federation's only hope of stopping massive Dominion reinforcements from entering the Alpha Quadrant relies on Sisko's suicide mission to reach DS9 before the minefield is destroyed.

Stardate: 51247.5. Dax and Worf find their wedding plans threatened when Martok's wife challenges Jadzia's worthiness to be admitted into their house.

Stardate: Unknown. Kira finds herself falling in love with the mirror-universe version of Bareil, who has crossed the reality plane to begin a new life.

Stardate: Unknown. Bashir agrees to counsel a group of eccentric, genetically enhanced humans ... and finds himself reevaluating his own enhanced nature when they calculate a disastrous prediction for the outcome of the Dominion War.

Stardate: Unknown. When Quark and Rom's mother is abducted by the Dominion, the two brothers recruit an all-Ferengi team to embark on a dangerous mission to get her back.

Stardate: 51408.6. After being attacked by Cardassian forces, Sisko gets stranded with a very psychotic Gul Dukat, who was being transported to his trial. Meanwhile the crew of the Defiant races to rescue survivors.

Stardate: Unknown. A former patron of Quark's bequeaths everything to him.

Stardate: Unknown. Captain Sisko has a full sensory vision of himself as an under-appreciated science fiction magazine writer in 1950s America.

Stardate: 51474.2. An attack by the Dominion on Sisko's ship endangers Dax and her crew aboard as she leads them into an anomaly that shrinks them to a very minute size. Unfortunately, they were being held stable by Sisko within a tractor beam, which was discontinued during the attack.

Stardate: Unknown. Chief O'Brien goes undercover to infiltrate an Orion crime ring.

Stardate: 51597.2. Worf and Jadzia travel to the badlands to procure some information on the Dominion from a traitorous Cardassian. Bashir wants to engage in a holo-suite spy simulation, but O'Brien prefers to brush up on his tongo game after watching Jadzia lose to Quark.

Stardate: Unknown. After receiving some disturbing information from Gul Dukat, Major Kira seeks Sisko's approval as Emissary to travel back in time to find out the truth about her mother. Meanwhile, Chief O'Brien and Dr. Bashir discuss a holosuite program surrounding the Battle of the Alamo.

Stardate: Unknown. Dr. Bashir's plans to attend a medical conference at a breezy resort are canceled when Starfleet Intelligence boards DS9, suspecting the doctor of treason.

Stardate: 51721.3. To save the Federation in a critical scheme, Sisko comes to realize that he must violate its fundamental principles to do so.

Stardate: Unknown. Odo is schooled in the ways of romance by a holographic programmed lounge singer.

Stardate: Unknown. Sisko runs afoul of Kai Winn when he removes a Bajoran artifact from an archaeological dig after he receives a vision from the Prophets.

Stardate: 51825.4. Jake and Nog's runabout comes under attack from the Jem'Hadar. They are rescued by the Valiant, a ship manned by Red Squad, a elite group of young Starfleet cadets.

Stardate: Unknown. Quark's mother and the Grand Nagus show up on DS9, announcing a new amendment to the Bill of Opportunities he has instituted on the home planet of Ferenganar, and then follows up with the announcement, that, due to the new amendment, chaos has followed and he has been deposed.

Stardate: Unknown. The Chief's daughter gets caught in a time displacement and when they get her back, she is considerably older.

Stardate: 51948.3. As the Defiant races to a shipwrecked officer who is days away, the crew keeps in contact with her. Meanwhile, Jake follows Quark's latest scheme for story research.

Stardate: Unknown. When Sisko is picked to head up an attack on the Cardassian homeworld, the Prophets appear to him in a vision, warning him of impending doom if he leaves the station.

Stardate: Unknown. As Kira begins working with a Romulan presence aboard the station, Sisko looks for answers in a vision he receives from the Prophets, leading him to uncover a family secret.

Stardate: 52152.6. As Sisko searches for the Orb of the Emissary, Kira prepares a blockade opposing the Romulans near the Bajoran moon Durna. Meanwhile, Worf and Martok lead a suicide mission in Jadzia's name.

Stardate: Unknown. Ezri Dax finds difficulty in trying to settle into a new life, as Jadzia's memories and relationships provide her with one emotional challenge after another.

Stardate: Unknown. Sisko is challenged by a Vulcan captain to a competitive match in an Earth game of skill known as ... baseball.

Stardate: Unknown. Bashir begins falling in love with a genetically engineered patient whom he helped bring out of her state of introversion.

Stardate: Unknown. A clone of Weyoun seeking asylum submits himself to Odo as a prisoner, offering invaluable information about the Dominion.

Stardate: Unknown. With nowhere to turn and old age having made him obsolete, Klingon legend Kor asks Worf to help him find one last glorious battle.

Stardate: Unknown. Sisko's crew is diverted to the front lines, where, alongside war-torn Starfleet officers, they must make a stand against a Jem'Hadar assault.

Stardate: Unknown. Kira is kidnapped by a Bajoran Pah-wraith cult led by Dukat.

Stardate: Unknown. Mentally and emotionally scarred by his combat injuries, Nog seeks comfort in the holographic fantasy world of Vic Fontaine.

Stardate: Unknown. A search for O'Brien, who has gone missing somewhere near Ezri's home world, reunites Ezri with her family and their troubles.

Stardate: Unknown. The Grand Nagus goes missing in the mirror universe, leading Quark and Rom on a mission to track him down.

Stardate: Unknown. A murder investigation prompts Ezri to confront the repressed memories of Joran, a former Dax host who had killed three people.

Stardate: 51474.2. A shapeshifter, one of "the hundred" sent from the Link centuries ago to explore the galaxy, tries to convince Odo to abandon his life as a humanoid in favor of a grander quest.

Stardate: Unknown. A surprise programming feature brings mobsters to take over Vic's lounge, leading the DS9 crew to devise a plan to get rid of them.

Stardate: Unknown. When the mysterious Sloan attempts to recruit Bashir for an undercover mission on Romulus, Sisko orders Bashir to go along with the plan, in hopes of learning more about Section 31.

Stardate: 52576.2. While Ezri goes searching for Worf, who has been missing since a Dominion attack on his ship, Sisko proposes marriage to Kasidy and begins plans to build a house on Bajor.

Stardate: Unknown. Sisko must decide whether to oppose the Prophets and marry Kasidy. Meanwhile, Dukat comes to DS9 with a Bajoran identity and a plan to manipulate Kai Winn; and Worf and Ezri are held captive by the Breen.

Stardate: Unknown. A new alliance between the Dominion and the Breen further appalls Damar. Meanwhile, Winn finds her spirituality thrown into chaos when she has a vision from the Pah-wraiths.

Stardate: Unknown. As Winn begins studying her uncertain role in following the path of the Pah-wraiths, the Federation engages in battle for the first time against the Dominion and their new Breen allies.

Stardate: Unknown. As Kira leads a mission to help organize Damar's resistance forces, Bashir learns that Odo has been infected with the disease sweeping through the Great Link.

Stardate: Unknown. As tensions mount within Kira and Damar's resistance cell, Worf realizes he must take action to prevent Gowron from making a key strategic mistake.

Stardate: 52645.7. Bashir and O'Brien capture Sloan and probe his mind in a search for the cure to Odo's disease.

Stardate: 52861.3. With the Cardassian resistance movement crushed, Kira, Damar, and Garak find themselves trapped behind enemy lines. Meanwhile, Grand Nagus Zek announces his retirement and plans to name Quark his successor.

Stardate: 52902.0. As the war careens toward a final showdown on Cardassia, Sisko's definitive action as the Emissary draws near.

Stardate: Unknown. Sisko leads, what he hopes will be, a final all-out assault on Cardassia Prime. Kira and Garak mount a suicidal assault on the Cardassian headquarters occupied by the Dominion, who in turn kill innocent women and children village by village in retaliation for the Resistance's attacks.