The third STAR TREK series concerns Benjamin Sisko, commander of the starship Deep Space Nine, who discovers the first known stable wormhole - a virtual shortcut through space that leads to the Alpha Quadrant to the Gamma Quadrant on the other side of the galaxy. The Gamma Quadrant is governed by the Dominion, a group led by the Changelings - an group of shapeshifters which counts DS9 crew member Odo (Rene Auberjonois) among its numbers. The Dominion has become a violent force in the galaxy, and the Deep Space Nine and its crew has become the only home in upholding the way of life established by the Federation.

Episode Listing:
Apocalypse Rising
The Ship
Looking For par'Mach In All The Wrong Places
...Nor The Battle To The Strong
The Assignment
Trials and Tribble-ations
Let He Who is Without Sin...
Things Past
The Ascent
Rapture
The Darkness And The Light
The Begotten
For The Uniform
In Purgatory's Shadow
By Inferno's Light
Doctor Bashir I Presume
A Simple Investigation
Business As Usual
Ties of Blood and Water
Ferengi Love Songs
Soldiers of the Empire
Children of Time
Blaze of Glory
Empok Nor
In The Cards
A Call To Arms