Utopia ( TV story ) Utopia was the eleventh episode of the third series of BBC Wales " Doctor Who " . It marked the return of Captain Jack Harkness and notably featured the first televised re - appearance of the Master since 1996 ' s " Doctor Who " TV movie . This marked not only the first time two new different incarnations of the Master were seen in an episode of the show , but also the first time the Master was seen properly regenerating on - screen . This story continued on from the end of the " Torchwood " episode " End of Days " , with a six - month gap in between broadcasts . It also continued in " The Sound of Drums " leading some , including the DWM survey , to take it as a three - part story . ( DWM 385 ) However , " Utopia " , " The Sound of Drums " , and " Last of the Time Lords " writer and series 3 head writer and executive producer Russell T Davies always took it to be a separate story . ( DWM 406 ) Synopsis . As Captain Jack comes into the Doctor ' s life again , the TARDIS is thrown to the end of the universe . As the last remnants of human ity struggle to reach " Utopia " , unknown to all , the Doctor ' s greatest enemy is about to rise again . . . Plot . The TARDIS arrives at Cardiff to refuel at the Rift . The Tenth Doctor notes in surprise that the Rift has been active , and so refuelling should only take 20 seconds . Martha asks about the earthquake that happened in Cardiff , to which the Doctor replies , " A bit of trouble with the Slitheen . " A figure suddenly bolts toward the TARDIS screaming " DOCTOR ! " from the distance . . . The Doctor , shocked , sees Jack Harkness running towards the TARDIS on the monitor and takes off . Jack leaps onto the TARDIS as it dematerialises , and the TARDIS console sends out sparks , knocking the Doctor and Martha to the floor . The Doctor is astonished that they are accelerating towards the future , ending up at the year 100 trillion — the end of the universe . Jack holds on tightly to the TARDIS , screaming for the Doctor as they hurtle through the time vortex . . . Somewhere else , a humanoid face with fangs turns and announces that " human s are coming ! " In a desolate area , a human is running from the Futurekind . Within his laboratory , Professor Yana notes that there is movement on the surface : a " human hunt " . His assistant , Chantho , asks if she should alert the guards . Yana tells her not to , as they can ' t spare them . The Professor is asked for a progress report over the radio but evades it by having Chantho answer . While she speaks , he is unable to focus due to the sound of drums in his head . Chantho gains his attention to show him that the surface scanner has now detected the TARDIS . He remarks , " It would seem something new has arrived . . . " The Doctor tells Martha that he doesn ' t know what is outside — none of the Time Lord s ever came this far . Gleeful at seeing the unknown , they leave the TARDIS . Outside , they find Jack on the ground . While Martha rushes back into the TARDIS to get a medical kit , the Doctor says to Jack , " Oh , I ' m sorry . " Realising that Jack hung on all the way through the vortex , the Doctor remarks that it is " very him " . Martha says that Jack is dead , but just then he takes a deep breath and sits up , grabbing a shocked Martha by the arms . Jack immediately begins flirting with Martha , and an annoyed Doctor tells him not to start . The Doctor and Jack greet each other tersely . The Doctor playfully asks if Jack has had any surgery , which Jack scoffs " you can talk " , as Jack had not seen this incarnation yet . Jack accuses the Doctor of abandoning him , which the Doctor shrugs off . Jack asks after Rose , having seen her on the list of the dead after the Battle of Canary Wharf . The Doctor happily tells Jack that she is safe and sound on a parallel world along with Mickey and Jackie . Jack and the Doctor embrace in relief , while Martha shows subtle resentment over the mention of Rose again . The Futurekind are once again seen chasing the same man as before . Jack tells Martha of being stranded in the year 200 , 100 A . D after the Doctor had left without him , much to her indignation . In response , the Doctor coolly claims that he had been " busy " . Jack shows Martha his vortex manipulator — which an unimpressed Doctor considers a space - hopper in comparison to his " sports car " TARDIS — and explains that he had used the manipulator to try to get back to the 21st century , but ended up in 1869 and had to live through the following decades , basing himself at the Rift until his life coincided with one of the Doctor ' s incarnations that would know who he was . Martha asks if the Doctor just gets bored of his companion s . Jack says , " Not if you ' re blonde " , to which Martha displays sarcastic surprise at the fact Rose was blonde , causing the Doctor to become irritated at their complaining . They come across a city - like conglomeration . When Martha asks about humanity ' s fate , Jack spots the man running from the Futurekind . Jack catches the man , and pushes him towards the Doctor , drawing his service revolver . The Doctor stops Jack from killing the Futurekind , and Jack fires into the air , scaring them . The Doctor plans to head for the TARDIS , but they are cut off by more Futurekind . The four head for " the Silo " . They approach the gates , with the Futurekind closing the distance . The guard yells at them to show their teeth , admitting them to the Silo once they show their normal human teeth . A soldier fires an assault rifle at the Futurekind to force them back ; when Jack remarks that the Doctor didn ' t tell " him " to put his gun down , the Doctor points out that the soldier is not his responsibility . The Futurekind leader reluctantly orders his minions to fall back ; they retreat a short distance where they can keep watch on the Silo . The man asks the soldier if he can be taken to Utopia , which the soldier happily responds to affirmatively . Professor Yana learns that the Doctor , who claims to be a scientist , is in the Silo , and rushes upstairs to find him . The Doctor asks for the men to help retrieve the TARDIS . The Doctor is happy when he discovers that humans have survived to the end of the universe , remarking that though they " spent a million years evolving into clouds of gas " , they revert to the same form eventually . Jack flirts with a male refugee , with the Doctor once again telling him to stop . Jack helps the Doctor open a deadlock seal , and the door opens to show a deep rocket shaft , into which the Doctor blindly steps and nearly falls down before Jack yanks him back . They see a large rocket in the shaft , with neither the Doctor or Jack recognising the engines . The Doctor muses on what " Utopia " can mean if the universe is collapsing . The Professor arrives , dragging an amused Doctor away , followed by Martha and Jack , but the four pass a woman whom nobody notices baring her teeth , revealing her to be one of the Futurekind . Back in the lab , Jack immediately flirts with Yana ' s alien assistant while the Professor shows the Doctor all the machines within the rocket . However , the Doctor can ' t help , as the technology is unknown to him . Martha is shocked and disgusted to find the Doctor ' s hand ( which Jack describes as his " Doctor Detector " ) in a glass case in Jack ' s backpack , and the Doctor explains how he lost it " Christmas Day , in a sword fight " . Yana enquires as to the Doctor ' s species , and the Doctor is saddened that the Time Lord s have never been heard of in this time . He then adds somberly that the end of the universe is a bit humbling for his species . Chantho reveals that like the Doctor she is also the last of her kind , the Malmooth , and Yana says that this was originally the Malmooth homeworld Malcassairo , before the humans took refuge . In response to Jack ' s query about who the " Beastie Boys " upstairs are , Yana tells them of the Futurekind , which in themselves are a myth . It is feared that they are what the humans will become , unless they reach Utopia . Yana shows the Doctor the co - ordinates of Utopia , supposedly a project of the Science Foundation to find a way to save mankind from the end of everything . Yana once again hears the sound of drums . The Doctor surmises that the rocket will not fly , but Yana hasn ' t told the others to keep them from losing hope . Impressed by this , the Doctor applies what knowledge he has and uses the sonic screwdriver to get the system working . The passengers board the rocket , the outside guards secure the gate against the Futurekind and retreat into the Silo , and the Doctor , Yana , and Jack work to speed up the launch process . The Doctor notices that some of the wires are odd looking . Yana tells him they are crafted from gluten extract . He remarks to Yana that he built the system of " food and string and staples " , calling Yana a genius who would be revered in a different time . Yana admits wistfully that some admiration just once would have been nice . The Doctor has also realised that Yana must stay behind to launch the rocket , which the Professor admits — Chantho has refused to leave , and he considers himself too old for Utopia , instead wishing for rest ( death ) . A message comes over the radio that the TARDIS has been found . The Doctor gleefully remarks he may have a way for Yana to go too , though Yana barely hears him , for as he looks at the picture of the TARDIS , the sound of drums grows louder in his head . . . The Doctor uses the TARDIS to provide extra power . The Professor tells the Doctor of the sound of drums and how they are growing louder , as if they are getting closer ; he says that he has heard them all his life . Chantho tells Martha she has been with the Professor for 17 years , letting slip her unrequited love for him , something Martha sympathsises with . Martha asks about the sentence structure she uses , starting sentences with " Chan " and ending with " Tho " . Chantho replies that it would be rude not to , before trying once with a fit of the giggles . Atillo communicates with Yana , who gives him instructions as the communication line fails and then gets Martha to reboot the system every time the picture goes . Atillo sends Jate into the couplings room , which is flooded with Stet radiation , to enable the launch with a gravity footprint . The female Futurekind damages the system , and Jack and Yana furiously try to correct the radiation levels . Finally , Jack sends a massive ( and lethal ) current through his body in order to jump - start the override system , but Jate is vaporised by the Stet radiation . As the Doctor points out , no one can enter the room without dying , but as Jack comes back from the dead , remarks he has got just the man for the job . The Doctor and Jack race down to the couplings room — ordering Atillo to board the rocket — and Jack asks the Doctor how long he has known that he is immortal . The Doctor grimly replies , " Since I ran away from you " , as Jack enters the couplings room — unlike his predecessor , he just winces instead of disintegrating . As they watch the process , Martha tells Yana and Chantho of the Doctor ' s ability to travel through time and space . Yana has new sounds in his head , including the reverberating word " TARDIS " . Jack explains that it wasn ' t until 1892 that he found out he was immortal after getting killed in a fight on Ellis Island , then waking from death . His past deaths included falling off a cliff ; getting trampled by horses ; World War I ; World War II ; poison ; starvation . . . even a stray javelin . The Doctor tells Jack that to him he is " wrong " — a fixed point in time and space , a fact . Just " looking " at him is an effort for the Time Lord . Even the TARDIS knew what Jack was — it had travelled to the end of the universe to try to shake him off ! Jack recalls facing three Dalek s and his death at their hands , and the Doctor explains about Rose and the Bad Wolf entity , remarking that if a Time Lord had done what she did , they would have become a powerful and vengeful god . The Doctor then tells Jack that because of her humanity and compassion , Rose used her new - found power to bring him back to life , but unable to control the power , the transformation was irrevocable ; the Doctor muses that " the final act of the Time War was life " . When Jack asks if Rose could reverse the process , the Doctor replies that not only did he remove the power from her , but she is trapped in the parallel universe and can ' t return home . Jack says that he went back to the Powell Estate in the 1990s , never letting Rose see him ( to avoid temporal contamination ) but watching her growing up . When asked if he still wants to die , Jack admits that he isn ' t sure anymore . The Doctor points out that Jack has the potential to meet other incarnations of himself across time — and that he might still be around in this time — joking that " it ' s the only man you ' re ever gonna be happy with " . As Jack says that this new regeneration is a cheeky one , " regeneration " is another word added to those reverberating around Yana ' s head . . . Yana is in tears , remembering stories of time travel from the old days that he never believed . He pulls out a fob watch , remarking that he was always late with time and the watch never worked . Martha is shocked , recalling the Doctor having a similar watch which he used to become human to avoid the Family of Blood . She asks where he got it , and Yana remarks that he was found with the watch , " an orphan in the storm " , on the coast of the Silver Devastation . Yana says it is broken , and Martha asks how he could know if he has never opened it . Martha turns over the watch and finds Gallifreyan inscriptions on it . Martha rushes to find the Doctor , having inadvertently piqued Yana ' s interest in the watch . The countdown for launch begins . Martha tells the Doctor of the watch , and the Doctor dismisses the idea as impossible . Jack says he may not be the last Time Lord , and Martha says it should be brilliant news — though the Doctor says it depends just which Time Lord Yana is . The Doctor yells at Martha , desperate to know exactly what Yana said . As Yana inspects the watch , malevolent voices call to him from it , demanding that he open it . Jack remarks that the end of the universe is the perfect place to hide , and Martha recalls the dying words of the Face of Boe : " You Are Not Alone " — for which " Yana " is an acronym — and the Professor opens the watch . A burst of golden energy swirls into the Professor ' s face and radiates through the laboratory , which astonishes Chantho . The rocket launches , and the Futurekind watch in frustration as it leaves . Chantho tries to speak to the Professor , but the look in his eyes has changed — they are now dark and sinister . Yana deliberately closes all the doors , barring the entrance of the Doctor , Martha and Jack to the laboratory , then coolly opens the front gates , allowing entrance by the Futurekind to the Silo . Chantho frenetically attempts to reason with him , but he fails to yield . She holds a gun to Yana to try to stop him , but he advances on her with high - voltage cable in hand . As the Doctor and the others try to get back to the lab — having to double back after running into the Futurekind — Yana blames Chantho for never asking about the watch and spitting that her constant " chan " and " tho " drove him insane . Chantho begs " the Professor " for his forgiveness , but he shouts that it is not his name — merely a disguise so perfect he forgot his own identity . When a terrified Chantho asks who he really is , he replies , " I . . . am . . . the Master , " before electrocuting her with the cable as the Doctor , Martha , and Jack reach the lab and try to get in . As the Master pulls the cable from the TARDIS , Chantho shoots him before dying . Jack finally smashes the control panel to open the door , but the Master retreats into the TARDIS , putting the catch on the lock to prevent the Doctor getting in with his key as well as deadlocking it against the sonic screwdriver . As the Doctor shouts desperately that everything ' s changed , Jack and Martha struggle to close the lab ' s door against the Futurekind . Fatally injured , the Master fumes on being killed " by an insect . . . a girl . . . " and then proclaims that if the Doctor can be young and strong , so can he . With a deranged wail , the Master explodes in a spectrum of regeneration energy , his eyes glow violently , and he changes into a younger form , collapsing to the floor as the pain of his regeneration overwhelms him . The Doctor stands outside his TARDIS aghast and helpless while Martha and Jack desperately block the Futurekind from gaining entrance . Now a new , even more psychotic version of himself , the Master springs up from the TARDIS floor . Laughing in triumph , the Master uses the TARDIS ' intercom to speak to the Doctor — sarcastically remarking about his past propensity to tell the Doctor his plans and remarking that he won ' t do so this time — and Martha realises that she knows his voice . The Doctor begs him to stop , to which the Master demands that he use his name . The Doctor then says , " Master . . . I ' m sorry . " The Master pauses and shouts , " Tough ! " as he prepares the TARDIS for launch . The Doctor uses the sonic screwdriver and stops the launch momentarily . The Master overrides it and gleefully bids the three a sarcastic goodbye . The TARDIS dematerialises as the Doctor looks on in horror , while the Futurekind pound at the door . . .