The station goes into lockdown and the crew is endangered when an old Cardassian security program is accidentally activated.
Event Year: 1993
The Quickening
Bashir tries to help a planet in the grips of a Dominion-engineered plague that guarantees a painful death.
Blood Oath
Three legendary Klingons come to DS9 to see if Jadzia Dax will participate in a Blood Oath they made with Jadzia’s previous host Curzon.
Body Parts
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.
The Search (1)
Instead of waiting for the Jem’Hadar to attack, Sisko wants to try a different approach. He wants to take a new class starship to try to find the Founders.
Shadows and Symbols
Ezri joins Sisko and his family on his quest for the Orb of the Emissary. Colonel Kira mounts a blockade around a Bajoran moon where the Romulan alliance has deposited an ammunitions dump, claiming it in the name of defense for a Romulan hospital. And Quark joins the rest of the DS9 crew as they join Worf aboard a Klingon warship as they mount a dangerous mission in Jadzia Dax’s name in an effort to get her spirit into Stovokohr, the Klingon equivalent of Heaven.
For the Uniform
When the traitorous Eddington returns, Sisko will go to any lengths to capture him.
A Simple Investigation
Odo becomes romantically attached to a woman working with the Orion Syndicate.
Destiny
Sisko faces a conflict between his Starfleet duties and his role as the Bajoran Emissary when an ancient Bajoran prophecy predicts that a joint Federation-Cardassian project will lead to the destruction of the wormhole.
Homefront
Sisko travels to Earth when a bombing at a Federation conference is determined to be the work of Changelings.
Armageddon Game
Chief O’Brien, who still doesn’t like the good Doctor Bashir, must rely on him when the two are stranded on a planet and O’Brien is infected with a deadly, fast moving disease.
The Adversary
The Defiant is off to show the Federation’s presence to the new Tzenkethi government. While underway the ship malfunctions and Bashir is suspected of sabotage.
Wrongs Darker Than Death or Night
After receiving some disturbing information for 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.
Return to Grace
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.
Past Tense (1)
Sisko, Bashir and Dax are accidentally sent to San Francisco in the 21st century due to a transporter malfunction, and must figure out how to get back to return without changing the time line.
Valiant
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.
The Maquis (2)
Sisko tries to resolve the Maquis crisis by preventing a war, freeing Gul Dukat and offering the defected Hudson the chance to return.
Past Tense (2)
Sisko is forced to take the place of a key historical figure on Earth in 2024 in order to preserve the timeline.
Change of Heart
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.
Who Mourns for Morn?
A former patron of Quark’s bequeaths everything to him.