Shattered Mirror ( episode ) Professor Jennifer Sisko uses Jake to lure Sisko to the " mirror universe " to help the rebels build another starship " Defiant " . Summary . Teaser . Jake Sisko is at his usual place on the second floor of the Promenade when Odo walks by . Instinctively , he goes to leave as Odo often did when Nog was around , but Odo doesn ' t have a problem with just Jake there . Jake dismisses missing Nog that much , but Quark , nearby , says he does miss him a lot and furthermore complains about losing a waiter . Jake leaves to think somewhere else . When he arrives in his quarters , he finds his dad sitting with from the mirror universe . Before being able to think about it , he thinks it might be his mother . Act One . Jennifer and Ben quickly explain to Jake , though he ' s amazed how much she looks and sounds like his mother . Although he knows Jennifer is not his mother , he becomes very affectionate to her . Benjamin is then called to duty , as a Bajoran Minister , Gettor , is anxious to see him . He is forced to leave the two alone . When he returns , he discovers they have left the station , leaving behind a multidimensional transporter device . Sisko tries to follow this trail , accompanied by Major Kira and Chief O ' Brien , only to discover the device was programmed to transport him to the mirror universe alone . He finds himself on ( which the Terran Rebellion had captured from the Klingon - Cardassian Alliance ) and sees , who says Jake is with the professor , but he is not willing to let Sisko go . Some armed guards make the point stick . Act Two . In the office , Smiley explains they have built a copy of the based on the data and schematics that Smiley downloaded from Deep Space 9 ' s computers . Like the original , this copy has structural problems , and the rebels need Sisko ' s help to prepare it for an upcoming battle with the Alliance . Smiley is willing to transport the Siskos back to their universe before the battle begins , but only after the modifications are complete . Benjamin admits the structural integrity field grids needed overhauling , a two - week process . The Alliance attack , however , is expected in four days – likely not enough time . Smiley promises him that , if he doesn ' t help , he ' ll either die in the firefight or serve in the Alliance with Jake . Then , enters demanding to know whether Sisko will help them . Smiley says he will , and Bashir immediately punches him , a payback for Sisko ' s punch earlier . Sisko goes to to find Jake with Jennifer and talking to , mentioning they were friends . Nog can ' t believe it , but invites him to spend time with one of the women there . Sisko yells for Jake , and Jake admits he wanted to spend time with his mother . Sisko tells him Jennifer is nothing like her , but Jake is unphased . He scolds Jennifer privately for what she did , but Jennifer has the same attitude that Smiley has . They are desperate to fight the Alliance . He agrees to help , but orders her to stay away from Jake , but she says she ' s unable , as Jake wants to spend all his time with her . Meanwhile , the lead Alliance ship , commanded by Regent , is on its way . He has brought to him , and blames him for the loss of Terok Nor . Garak tries to explain he ' s not alone in the blame , but Worf is infuriated that he ' s the only one to escape , implying cowardice . He says he cut his losses while the Intendant pleaded for her life . Worf commits to dealing with the rebels himself , promising Garak will be forced to fight as well . Garak forces enthusiasm , but he is chained and Worf won ' t release him until the rebels are killed . Act Three . Sisko is on the bridge of the " Defiant " working on various parts and coordinating with Smiley . , after hearing Sisko is back , barges in and slaps him for being intimate with her earlier in order to keep his ruse . He quickly agrees never to try that again when they hear a scream from inside the station . The Intendant is being tortured by Bashir for trying to escape her interrogation . Sisko objects to Bashir continuing to hurt her out of malice , saying just because the Alliance was brutal doesn ' t mean he needs to be . Bashir orders her taken away , but not before she comments on how fooled she was by Sisko earlier . Word has reached the Alliance ships of the " Defiant " . Worf is told about the ship , and is angered at the increased effort it will mean for him . Garak suggests increasing their speed , but Worf is rebukes him , still blaming him for the situation . After a long day on the " Defiant " , he arrives at quarters to find Jennifer with Jake having dinner . Sisko says they need to leave in order to get sleep , and Jake goes to clean up after dinner . Alone with Jennifer , she tries to massage him and remind him she is not the enemy . She says he ' s done well with Jake , and admits she is enjoying her time with him , the son she will never have . Just then , Smiley enters to inform them the Alliance fleet is now only eight hours away . Act Four . To stall for time for the much needed repairs , Dax says they need to stall for time . Bashir says he can get extra time with a few raiders , but Sisko is suspicious . He goes to the Intendant to get information on weaknesses in the Alliance fleet . She laughs , but Sisko convinces her that Garak has probably ran to the Regent and arguing she was at fault for losing Terok Nor and probably in danger now . After an unsuccessful attempt to get the force field lowered , she admits the ships ' targeting sensor s can be fooled with warp shadow s . Meanwhile , Garak is punished by Worf for taking the key to his chains . Insisting he didn ' t take it , he points out he ' s still trapped on the ship , and it would not do him any good . Worf loses his patience and stabs him with his " d ' k tahg " , just as the guard finds the key in his boot . Worf takes his knife back and tells the guard to make sure he lives . As the guard leaves with Garak , Worf is informed of six rebel raiders approaching . They don ' t detect that they are actually false signals , and the Birds - of - Prey go after them , but their disruptor blasts are diverted . Jennifer finds Sisko working and offers to help , since she has smaller hands . During , she tells him she told Jake the reality of her intentions and what the rebels are trying to do . Furthermore , Jake said it doesn ' t matter , since she reminds him too much like his mother . Mentioning she never had someone care about her like that , she offers to send Jake back to Deep Space 9 now , and that both she and Smiley trust Sisko to finish what he ' s doing . Sisko says to go ahead . Before she leaves , she supposes that the connection they had initially between them is now lost because of what she ' s done , however , Sisko supposes it was never real to begin with . A little stunned , she leaves . Jake , at his usual spot , but in the mirror universe , has his thinking interrupted by Nog . He insists his thinking is disrupting him ( or perhaps his loitering ) and that he should leave . Amused at the reversal of roles , he laughs , but Nog is not amused . Jennifer arrives to get Jake . Soon , the Birds - of - Prey arrive and fire on the station . On the " Defiant " bridge , Smiley says Sisko can go and takes command , though not before wishing for some on - the - job training . Sisko considers it , and instead takes command himself . Smiley , very surprised , follows his commands . Nog soon decides to free Kira as a thank you for her earlier actions in killing and , allowing him to inherit the bar . She takes his phaser and they leave for a ship Nog has prepared . She plans to head for Bajor , and so Nog leaves her to it , going down a different corridor . Kira lets him go for a second , but rethinks it and instead kills him . Before Kira makes it to the airlock , she intercepts Jennifer and Jake . Act Five . Sisko leads the " Defiant " , teaching Smiley a few moves in the process , to victories against a few of the Birds - of - Prey . Meanwhile , Kira says she plans to take Jennifer as a present to the Regent . Jennifer insists Jake be left on the station , which makes Kira interested . She fakes agreement to leave him , and tries to shoot instead , only for Jennifer to jump in front of the blast . She is about to kill both of them when she asks who he is . When she realizes he is Sisko ' s son , she spares him to give him a message – that Sisko is now in her debt for sparing his son ' s life , and it is a debt on which she intends to collect . The " Defiant " is now faced with the Regent ' s flagship . Sisko then resolves to pilot the " Defiant " himself , which Smiley gladly accepts . He is able to make a couple passes very close to the ship , making it difficult to target him and at the same time inflicting major damage . The Regent is incensed , and can only demand the ship be destroyed . Another Bird - of - Prey arrives , but it is attacked by the raider , which has returned to the station . Bashir and Dax briefly celebrate , but Sisko orders them to concentrate on the flagship ' s forward shield , which he has punched a hole in . Garak successfully convinces Worf to flee , and the rest of the forces follow them . Worf is finally convinced that the Intendant is responsible for the loss , and Garak becomes enthusiastic about killing her himself . Sisko returns from the battle to find Jake in the infirmary with Jennifer , who is clinging to life . With her last words , Jennifer tells Sisko that she knew they were still connected , to which he responds , " always . " Sisko and Jake share an emotional hug , and Sisko suggests that they return home to Deep Space 9 . Memorable quotes . " " You remember Captain Bashir . " " " " Captain ? " " " " Captain Bashir , Captain O ' Brien , Captain Sisko . We may not have enough weapons or troops or ships but we have plenty of captains . " " " " This time , I will deal with the rebels myself . " " " " When we first met , there was a . . . a connection between us . Now because of what I ' ve done it ' s gone , isn ' t it ? " " " " I ' m not sure it was real to begin with . " " " " That Cruiser has us in weapons range . Do we make a run for it ? " " " " We run alright , right at it ! " " " " Ahh ! Pattern suicide . " " " " The Intendant was bad enough ! She was irrational , accusatory , unappreciative but at least . . . " " " " At least " what ? " " " At least I was able to please her now and then . " " " " You are " not " my type . " " " " I never said " I " was . " " " Terok Nor will soon be ours again ! Then you can spend the rest of your life contemplating your failure as you labor alongside the other slaves in the ore processing center ! " " It ' s nice to have something to look forward to . " " " You know , I bet if we put our . . . heads together , we could create a little excitement for ourselves . " " " " You sentenced my wife to death . " " " " Isn ' t that a coincidence ? I was hoping you weren ' t married . " " " " Make it so ! " " " " Forgive me my Regent , but perhaps the moment has arrived to remove your august presence from the battlefield ! " " Links and references . References . 47 ; adrenaline ; Bajor ( mirror ) ; Breen ; chicken à la Sisko ; cruiser ; " Defiant " , ISS ; ; ; deuterium injector ; Emissary of the Prophets ; escape shuttle ; evasive maneuvers ; ; key ; Klingon Bird - of - Prey ; Marani ; multi - targeting phaser bank s ; " Pattern Suicide " ; " Negh ' Var " warship ; overseer ; Promenade ; quantum torpedo es ; Quark ( mirror ) ; Quark ' s ( mirror ) ; raktajino ; regent ; Regent ' s flagship ; Rom ( mirror ) ; sand pea s ; shrimp creole ; Sisko , Benjamin ( mirror ) ; Starfleet Academy ; structural integrity ; SIF ; targeting system ; Terran raider ; ; tyrant ; warp shadow