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Changing Face of Evil, The
While Kira reviews tactical plans with the Cardassian Resistance leaders, Odo returns from a mission, weakened by the disease that's ravaging his race. At the station, Bashir works through the night, trying to find a cure for Odo, while Sisko reproves Chancellor Gowron for reckless attacks which left General Martok injured. Back at rebel headquarters, Kira, eager to discover why the Federation's Klingon ships aren't damaged by Breen-Dominion technology, proposes stealing the enemy's weaponry so that the Federation can engineer a countermeasure.
Meanwhile, as Martok undergoes surgery, Worf tells Sisko of a plan for dealing with Gowron's self-serving offensives. At rebel headquarters, Rusot tries to provoke leader Kira, who was once an enemy, by claiming that her tactics are motivated by a desire to kill Cardassians rather than to conquer the Dominion. Later, the Cardassian Garak advises Kira to kill Rusot before he kills her.
Back at the station, Worf urges the recovering General Martok to challenge Gowron before he ruins the Klingon Empire — but Martok refuses to defy the ruler of his people. En route to secure the Breen weapon, the Cardassian Resistance leader Damar learns that his family was killed by the Dominion.
At Quark's, Worf confesses to Ezri that he was wrong for asking Martok to revolt against Gowron; but Ezri disagrees, contending that corruption among the Klingon leadership could prove fatal to the Empire. Damar, Rusot, and Garak escort Kira, posing as a prisoner, onto a Jem'Hadar ship which contains the Breen technology. Morphing into the Female Shapeshifter, Odo helps them overtake the vessel, but their plans for a quick getaway are slowed when they learn that the energy-dampening weapon is still being installed.
Kira refuses to leave without the weapon. At the station, O'Brien and Bashir hatch a plot against Section 31, which might lure an operative who holds Odo's cure. Back on the Jem'Hadar bridge, Damar kills a defiant Rusot. Fully united, Kira, Garak and Damar depart with the Breen weapon. In the Klingon war room, Worf denounces Gowron's corrupt leadership and, in a fierce battle, kills Gowron and declares Martok the rightful leader of the Empire. At Quark's, Ezri and Worf toast the truly honorable Chancellor Martok.