Defiant ( episode ) When Commander William T . Riker from the " Enterprise " - D arrives on Deep Space 9 , he takes a liking to Kira , who gives him a tour of the " Defiant " . But Riker is revealed to be not who he claims to be when he attacks Kira and steals the " Defiant " . Summary . Teaser . Major Kira Nerys is having a bad day , swamped with the numerous little details of running a space station . She has problems to handle the cargo of the five Byzatium transport s , gets information about the changed schedule of the Byzallian conference , and is informed about a Starfleet requested complete report about the computer calibration subroutine until tomorrow . At the infirmary , she snaps at Doctor Bashir when he starts complaining to her about the colonization schedule on Campor III . Realizing that she is stress ed from overwork , he uses his position as Chief Medical Officer and orders her to take time off ; reminding her that not even Commander Sisko can overrule his judgement . Bashir takes Kira to Quark ' s and tells her to enjoy herself with at least two things Quark serves her including a holosuite program , a jumja stick , Karvino juice , Lorvan cracker s , and gambling token . After resisting first , Kira starts to accept this order . But she is not alone for long as Commander Riker stands nearby at the bar ' s entrance and asks to join her . Act One . At the commander ' s office , Riker tells Sisko that he is on vacation and wanted to visit the station again before continuing his travel on to Risa . Down in Ops , Lieutenant Dax notices that Kira is preoccupied by a certain Commander , though she doesn ' t want to admit it . When Riker comes out of Sisko ' s office , Dax makes a reference to their last meeting in Quark ' s which he does not remember until she reminds Riker that she staked three strips of latinum when his winning streak ran dry . Riker hangs around the Promenade waiting for Kira to get off duty so he can arrange to " accidentally " run into her . Hesitant at first , she offers him a tour of the station and then at his suggestion , she agrees to show him the . Kira and Riker both enter an authorization code and handprints at the identification panel to enter the " Defiant " . Aboard the " Defiant " , they find Chief Miles O ' Brien working on the bridge and Riker is none too happy to see him , implying that they have had some falling out . O ' Brien is stunned by Riker ' s cold demeanor . He has no idea what he has done to offend his former first officer but excuses himself rather than intrude on the two of them . Kira , too , is surprised but does not press when Riker says he does not want to talk about it . She shows him the modifications they have made to the ship ' s systems , especially the weapons system . Riker asks to access them at the tactical station and , obligingly , Kira uses her authorization code " Kira delta 547 alpha " to release the bridge lockout . This is what Riker wanted and he then stun s Kira with a phaser . While she is unconscious , he arranges for Tamal and Kalita to beam aboard . A red alert sounds in Ops as the computer shows an imminent warp core breach aboard the " Defiant " . Riker contacts them from the " Defiant " bridge , saying there was an accident and Kira was injured and that if they release the docking clamp s , he will take the helm of the " Defiant " and clear it away from the station . Sisko agrees and will beam them out when they are clear . O ' Brien arrives , responding to the red alert . When Sisko orders him to beam Riker and Kira out , O ' Brien cannot because the " Defiant " s shields are up . Before any of them can react , the " Defiant " goes to warp . On the " Defiant " , Riker has Kalita set a course for the Badlands . He removes his false sideburns ; he is Lieutenant Thomas Riker . Kalita congratulates Tom on his successful commandeering of the " Defiant " – but he says it is not over yet . Act Two . Gul Dukat is summoned to a briefing where Odo explains how a transporter accident created a transporter duplicate of William T . Riker on Nervala IV nine years ago . Dukat finds it amusing until they tell him that they suspect Thomas Riker is with the Maquis , having made his support of them clear while serving on the . Dukat is furious that such a dangerous weapon may now be used to attack Cardassia . Sisko proposes a joint search mission of the Demilitarized Zone , but Dukat says Central Command would use this incident as an excuse to eradicate the Maquis instead . Starfleet would then send a fleet to protect the colonies . War seems inevitable . Sisko agrees to go with Dukat to Cardassia Prime and help them find the " Defiant " , and if necessary , destroy it . Riker apologizes to Kira for the deception but he will not be deterred . The " Defiant " meets with other Maquis ship s . They transfer over a crew and then they all head for the Federation - Cardassian border . Act Three . Sisko and Dukat arrive on Cardassia Prime , where the search will be conducted from the Cardassian War Room , the heart of the Cardassian military where Sisko also meets the Obsidian Order observer Korinas who secures all information from intelligence report s after noticing the Human in this secured area . She asks Sisko for the exact specifications and armament of the " Defiant " but Sisko stops her request . He reveals that the " Defiant " is equipped with a Romulan cloaking device . While this is news to Dukat , Korinas says that the Order already knew about it but was hitherto unconcerned . Sisko says he can provide partial specifications of an anti - proton beam that the Dominion used to penetrate the cloak . Under Maquis control , the " Defiant " passes the security perimeter into the Almatha sector and enters Cardassian territory . After the ship destroys Cardassian Outpost 61 , Dukat orders the fleet of the Sixth Order under the command of Gul to chase the " Defiant " back into the Demilitarized Zone , but Sisko realizes that the warp signature is wrong , it is a decoy . Dukat recalls Toran ' s ships but it is too late . The real " Defiant " uncloaks and destroys Outpost 47 , before cloaking again , its heading takes them into the heart of the Cardassian Union . Korinas leaves with a parting shot at Dukat . Aboard the " Defiant " , Riker sets a course for Omekla III and its shipyard . Meanwhile , Kira manages to sabotage the cloak from her quarters by crossing the replicator power converter with the plasma manifold , blowing off two plasma conduit s and suffering minor injuries to her shoulder . Act Four . Tamal treats Kira ' s injuries . Riker takes her to the bridge where they can keep an eye on her . While they repair the damage she caused , they hide the " Defiant " in a nearby nebula . Sisko plots strategy but Dukat is distracted . This is his son Mekor ' s eleventh birthday and he wanted his father to take him to an amusement center at Lakarian City . Sisko commiserates , noting that he himself had disappointed his own son from time to time , but it is part of his and Dukat ' s profession , and he hopes one day his son will understand . Dukat is not encouraged , instead predicting that his son will remember this day with hatred as the only thing he ' ll remember is a Federation officer on a Federation ship is invading his home and kept his father away from his birthday . Kira sees that the Maquis target is the Omekla III shipyard . Riker tells her that they had been getting report s that there were Cardassian hardliners wanting to scrap the peace treaty . They were secretly building up an invasion fleet in the Orias system according to an intelligence report . Kira tries to reach Riker , he is still more Starfleet officer than terrorist . Sisko suddenly tells Dukat that the actions of the Maquis follow a plan . They made no random attacks but are designed to leave one sector alone without any Cardassian warship s – the Orias system . Dukat is about to have Gul Ranor send a ship when Korinas threatens him if he does . The system is under the Obsidian Order ' s protection and they will defend it by destroying any ship which will reach this system . Act Five . Dukat has checked up and no one has been able to get any answers from the Obsidian Order regarding the Orias system , not even the Detapa Council . The " Kraxon " under the command of Gul Ranor has found a neutrino leak . The cloaked " Defiant " makes a run for the Orias System but they can track them . Dukat orders all ships to pursue but they cannot catch it . Suddenly three ships appear out of the Orias system . Dukat is surprised to see this and asks Korinas who the ships belong to , because if they were part of the military , he would know about them . Dukat also mentions that the Obsidian Order is forbidden to possess any military equipment . Korinas seems to be unconcerned about this violation and simply smiles deviously . Meanwhile , Thomas Riker refuses to back down now , even though it is starting to look hopeless . Kira guesses that this is less about the Maquis cause than it is about distinguishing himself from Commander Riker . Sisko makes a deal with Dukat : if he will let them surrender and turn over the ship and crew to the Federation , Sisko will turn over the " Defiant " s sensor log s which by now contain full scan s on the Orias system and whatever the Obsidian Order has been hiding . Dukat agrees only if they keep Riker to punish him for his actions . Sisko reluctantly agrees provided that Dukat arranges for the Cardassian Ministry of Justice take the death penalty off the table . The " Defiant " engages the Cardassian ships . They disable one but three more come to join them . They are out - numbered . Riker is about to continue any way when Sisko and Dukat contact him with their deal . He will be sentenced for life to the Lazon II labor camp . Kira pleads for him to think of his crew , only one more time like a Starfleet officer . Riker agrees and is told he must surrender to Gul Ranor on the " Kraxon " who will protect them from the ships of the Obsidian Order . After the " Kraxon " extends its shields and protects the " Defiant " , the " Keldon " - class starships of the Obsidian Order withdraw . True to his word , Riker transmits the sensor logs to the " Kraxon " and then beams over . Kira promises him that his crew will get a fair trial and they will come for him one day . Riker then moves to kiss her then transports to the " Kraxon " leaving Kira in command of the " Defiant " . Memorable quotes . " " Listen to me ! You can ' t have a runabout ! You cannot get your medical supplies and I don ' t give a damn about the colonization schedule ! Those colonists can make do with a box of bandages for all I care ! " " " " Stop right there , major ! " " " " Commander ! I ' d heard you were aboard but I – I hadn ' t . . . " " " " There ' s nothing to say to you , O ' Brien . I think you know why . " " " " Nine years ago , a transporter accident created two William T . Rikers . One of them returned to his ship ; the other was marooned on Nervala IV . " " " " The second Riker was finally discovered two years ago . He chose to use his middle name Thomas to distinguish himself from the other Riker . " " " " The two men are physically identical in all respects , right down to their DNA coding . There was no way for the security computer to know that it was Thomas , not William , who boarded the " Defiant " . " " " " The last time I was here , I was only able to spend a couple of hours at Quark ' s – but by the time I left , I had all of his latinum and a date with one of his dabo girls , so I thought I might try my luck again . " ( laughs ) " " " You be careful – Quark ' s dabo wheel has been a little stingy lately , and one of his dabo girls is dating my son . . " " " I ' d promised to take him to the amusement center in Lakarian City . He always wanted to go , but I never had the time . I told him , ' This year will be different , Mekor . This year I will make the time " . ' " " " I had the same experience with Jake . At that age , they never understand , do they ? You just hope that , one day later , they ' ll look back and say , ' Now I understand . Now I know why he did that " . ' " " " When my son looks back on this day , the only thing he ' ll remember is that a Federation officer , on a Federation ship invaded his home , and kept his father away from him on his eleventh birthday , and he won ' t look back with understanding . He ' ll look back with hatred , and that ' s sad . " " " " No , you ' re trying to be a hero . . . and terrorists don ' t get to be heroes . " " " " Be a Starfleet officer one last time and think of your crew . " " " " You shouldn ' t go fishing today , you won ' t catch anything . " " " " Tough little ship . " " Links and references . References . 19th century ; 2351 ; 2360 ; 2361 ; 2369 ; 2371 ; afternoon ; airlock ; Almatha sector ; Alpha Quadrant ; amusement center ; anti - proton beam ; Badlands ; Bajoran ; Bajoran earring ; Bajoran Militia ; Bajoran Militia uniform ; Bajoran ranks ; Bajoran Resistance ; bandage ; bar ; ; beard ; bearing ; bed ; belt ; birthday ; border raid ; bottle ; bridge ; ; bridge lockout ; brooch ; bulkhead ; bunkbed ; burn ; Byzallian ; Byzatium transport ; Campor III ; Cardassia ; Cardassian ; Cardassian border ; Cardassian Central Command ; Cardassian court ; Cardassian government ; Cardassian military ; Cardassian Ministry of Justice ; Cardassian outpost ; Cardassian patrol ship ; Cardassian ship ; Cardassian space station ; Cardassian territory ; Cardassian uniform ; Cardassian Union ; Cardassian War Room ; Cardassian warship ; Cardassia Prime ; career ; cargo ; cargo bay ; century ; chair ; Changeling ; channel ; checkpoint ; chief ; chief medical officer ; cloaking device ; clock ; cloud ; colonist ; colonization schedule ; colony ; combadge ; command authorization ; command chair ; command code ; command division ; commander ; commander ' s log ; command table ; communicator ; computer ; computer calibration subroutine ; conference ; conn station ; console ; corridor ; couch ; course ; crew ; crew quarters ; ; cubic light year ; dabo ; dabo girl ; dabo table ; dabo wheel ; ; damage report ; date ; day ; death ; decoy ; Deep Space 9 ; defense system ; ; ; " Defiant " - class decks ; " Defiant " dedication plaque ; deflector targeting array ; Demilitarized Zone ; designer ; desk ; desktop monitor ; Detapa Council ; diagnosis ; dinner ; DNA coding ; docking clamp ; docking ring ; doctor ; Dominion ; door ; duty ; earring ; emergency power ; engine ; engineering station ; ; exhaustion ; exhaustion ; eye ; face ; family ; father ; Federation ; Federation - Cardassian Treaty ; Federation colony ; female ; Ferengi ; field hospital ; fishing ; fish tank ; flashlight ; fleet ; ; gambling token ; Gamma Quadrant ; ; glass ; god ; " goose chase " ; gul ; handshake ; heading ; heart ; hero ; holosuite ; holosuite program ; homeworld ; ; hour ; Human ; identification panel ; impulse ; infirmary ; instinct ; intelligence report ; International Space Station ; invasion ; joint operation ; jumja stick ; " kanar " ; Karvino juice ; ; kilometer ; kiss ; " Kraxon " ; Kressari ; Lakarian City ; latinum ; Lazon II labor camp ; leave ; level four classification ; lieutenant ; lieutenant junior grade ; light year ; loan ; Lorvan cracker ; main power ; main viewer ; major ; male ; Maquis ; Maquis ships ; Mardah ; ; M - class ; medical supply ; Mekor ; middle name ; military buildup ; mind ; minute ; model ; monitor ; month ; morning ; ; name ; nebula ; Nervala IV ; nerve ; neutrino leak ; neutrino signature ; night ; nose ; observer ; Obsidian Order ; Occupation of Bajor ; office ; officer ; Omekla III ; operations center ; operations division ; Orias system ; Orias III ; outer hull ; Outpost 47 ; Outpost 61 ; PADD ; percent ; perimeter alert ; personnel file ; phase shift ; phase variance ; phaser ; phaser array ; phaser locker ; phaser power ; phaser range ; planet ; plasma conduit ; plasma manifold ; plasma relay ; pleasure ; politics ; port ; port nacelle ; ; prescription ; price ; primary phaser coupling ; prisoner ; Promenade ; protest ; quadrant ; quantum torpedo ; Quark ' s ; quarters ; radiation ; rank pip ; Ranor ; red alert ; rendezvous point ; replicator ; replicator power converter ; report ; resistance fighter ; resonance frequency ; Risa ; Romulan ; runabout ; Saltah ' na clock ; scan ; schematic ; sciences division ; second ; Second Order ; sector ; security computer ; security guard ; security office ; security perimeter ; security procedure ; sensor ; sensor log ; sensor range ; shields ; shipyard ; ; Sixth Order ; son ; space shuttle orbiter ; Squadron Baker ; stairs ; star ; starboard shield ; stardate ; Starfleet ; ; starship ; stellar cartography ; stress ; strip ; subspace harmonic ; suicide ; table ; tactical display ; tactical station ; tactical system ; terrorist ; thruster ; time ; ; transport ; transporter ; transporter accident ; transporter duplicate ; tray ; treaty ; trial ; Trill ; turbolift ; type 2 phaser ; unnamed medical tools ; unnamed nebula ; unnamed plants ; USS " Gandhi " captain ; vacation spot ; vial ; viewer ; viewscreen ; ; war ; wardroom ; warp core ; warp core breach ; warp drive ; warp factor ; warp plasma relay ; warp power ; warp signature ; warp speed ; warship ; weapons system ; week ; window ; year Deleted scenes references . bartender ; break - in ; cargo manifest ; communications relay ; Dameron system ; dowry ; Ferengi container ; Ferengi transport ship ; headache ; inventory record ; latinum ; Maquis base ; Omekla III ; polaron deflector ; public terminal ; Rokat colony ; shipyard ; space station ; Tholian ambassador ; unit ; vacation ; weapons depot ; wedding Script references . Daria ; NORAD ; Orias