The Xindi ( episode ) Six weeks into the Delphic Expanse , the crew is tipped off by a freighter captain who knows a lone Xindi working on a remote mining colony . ( " Season premiere " ) Summary . Teaser . The Xindi Council is discussing the coincidental arrival of the " Earth ship . " The Xindi - Reptilian s and Xindi - Insectoid s believe it is the beginning of an invasion . Jannar asks when the weapon will be ready . Degra says he needs time to run some more tests , but Dolim believes they will accomplish nothing if " " all you do is run tests " " . Dolim is asked to learn everything he can about " Enterprise " . Act One . " Enterprise " is en route to a trellium mining facility . A freighter captain of " " questionable character " " ( according to Reed ) has provided them with a tip that one of the miners there is possibly Xindi . Reed wants to proceed with caution . Archer turns to Reed and asks him what room they ' re in . It is the new command center , which used to be a storage bay for conduit housings . Archer tells Reed that they don ' t have the liberty of being safe or cautious anymore . In six weeks they haven ' t collected any data , so the lead given to them by the " " freighter captain of questionable character " " is all they have , then Archer is satisfied . In the mess hall , Hoshi Sato approaches a table with MACO s sitting round it , so she joins them . They introduce themselves as Major Hayes , Sergeant Kemper , and Corporal s Romero and Chang . When asking Kemper about Phlox , Sato surprises him by saying where he was from , Duluth , Minnesota . Major Hayes tells Kemper that Sato is a linguist , and that , given enough time , she could probably tell him which street he grew up on . Chang asks where they ' re headed , but Sato says that the captain will let them know at the right time . Excusing themselves , the MACOs leave for a briefing . Tucker takes Archer to Cargo Bay 2 , where all the equipment has stuck itself to one of the walls . Archer wonders if it is the grav - plating , but Tucker says it isn ' t . They watch for a moment as suddenly the equipment is sent flying to the opposite wall , where again it attaches itself . Archer asks Tucker to seal it off . T ' Pol enters sickbay where Phlox is studying epithelial cells taken from the corpse of the Xindi pilot recently recovered . It turns out that he has Reptilian characteristics . T ' Pol asks Phlox why he needed her . Phlox tells her about Tucker , who is struggling with sleep because of the death of his sister . He has been using sedatives , but wants T ' Pol to try Vulcan neuro - pressure with him . T ' Pol thinks that Tucker wouldn ' t have the patience for it . Reluctantly , she agrees . Unfortunately , Phlox has already asked Tucker if he would like to try the neuro - pressure , and he declined . Act Two . " Enterprise " arrives at the mining facility , and Archer and Reed go down in a , to meet the foreman at the mine . When talking to him , he wants Archer to give him something so that they can meet the Xindi miner – half a liter of platinum . Reed says it would take some doing , but it is possible . Archer demands to see the man and confirm that he really is Xindi , however , the foreman gives them a finger belonging to the Xindi , claiming it was an " " unfortunate accident " . " In the meantime , Tucker wakes up from a nightmare of watching his sister die when the Xindi probe fires its weapon . Phlox has studied the finger and found that he is and is not Xindi . In relation to the corpse however , the base - pair sequencing is much closer than that of Humans and chimpanzees . He notes that while the corpse was of a Reptilian , the finger isn ' t . Tucker enters , and tells Archer that 200 relays must be stripped , but it ' ll be done by the afternoon . Archer leaves , while Tucker asks Phlox for " " something stronger " " to help him sleep . Phlox tells him to return at 2200 hours , and he ' ll see what he can do . Back on the planet , Archer prepares to hand over the platinum , but the Xindi ' s work group is still asleep . Archer tells him that he can wake them early , because it took his people half the night to get the platinum . The foreman agrees . Taking them down to one of the lower levels , Tucker asks the foreman what trellium - D is used for , to which the foreman replies , " " insulation , mostly for interstellar vessels " . " The Xindi , Kessick , is shoved into the area , and Tucker gives the platinum to the foreman , who tells them to take their time , and promptly leaves with his guards . Archer gets straight to the point , asking him if he is Xindi and where their homeworld is , as he has " " important business " " with them . Kessick says he ' ll tell them , but only if Archer helps him escape . Tucker confronts Kessick angrily – and rather forcefully – prompting Archer to tell him to take it easy . T ' Pol contacts Archer , telling him that three warships are on the way . Realizing that they have to leave , albeit without the information that they wanted , Archer and Tucker make their way to the door – only to find it locked from the outside . Kessick says he can take them back to the shuttlepod , but he has to go with them . T ' Pol is contacted by the mine foreman , who tells her that Archer and Tucker will be " " slightly delayed " " , as they ' ve had to start deionizing the landing decks for the three incoming " " cargo ships " . " He explains that the ships are heavily armed because trellium - D is highly valuable , but Reed doesn ' t buy it . Archer , Tucker , and Kessick are wading through waist deep sewage and reach an access port . The trio gain access , and start climbing . Reed and Hayes are discussing their plans as T ' Pol enters . Hayes thinks Reed ' s security team is too valuable to send on the mission , saying that they ' d be better off defending " Enterprise " should an armed force come on board . T ' Pol agrees with Hayes , but leaves the decision to Reed . He asks Hayes to select six of his men , but Reed himself will lead the mission . After Hayes leaves , Reed tells T ' Pol that coming from a military family , he ' s seen men like Hayes all his life . Hayes just thought his team would be more successful than Reed ' s . Act Three . Back on the planet , one of the guards reports to the foreman telling him that Archer , Tucker , and Kessick have escaped . The foreman tells the guard to put a security force at the shuttlepod . Meanwhile , the escapees are scaling a vertical wall , with small indents so they can hold on to it . Archer asks Kessick why he hasn ' t used the duct before , but the atmosphere is about 30 times more toxic on the surface and there has never been a ship " " waiting for him " " before . Mayweather pilots the second shuttlepod down to the planet ' s surface , and tells them that they only have half an hour to complete the rescue mission . Meanwhile , the foreman has detected the escapees . He asks the guard to reroute the plasma flow into their section . Kessick tells Archer about the five species of Xindi . Their conversation is interrupted by the emergency baffles being closed , and the sound of the plasma coming towards them . As they don ' t know how far up the next access port is , Tucker suggests they go back to the previous one , which means sliding down – and fast . Archer makes it in time , and Tucker and Kessick push each other out of the way to get in safely as well . Both are pulled in by Archer , who closes the port just in time . Tucker fumes at Kessick , who can only stare open - mouthed at the guards who have just arrived . Kessick tries to feign innocence , claiming that they took him with them . He thanks them , and receives a hit in the face by one of the guard ' s rifles . Archer and Tucker carry Kessick to an open area , where the foreman says that they are too much trouble – so they must be killed . As they are taken away , the MACOs abseil in , starting a firefight . The foreman gets away , but the Earth commandos make short work of the mining guards , killing several . One of the MACOs is injured , but Archer helps him up . When the firefight is over , Kessick begs Archer to take him back to " Enterprise " as well , promising him the co - ordinates of the Xindi homeworld . Archer agrees . As Reed contacts Mayweather , telling him to set down , more shots come from the mist . One hits Kessick , who collapses . One of the MACOs uses his scope to shoot down their attacker – who just happens to be the foreman . On " Enterprise " , T ' Pol asks Sato to tell the shuttlepods to dock simultaneously , as the warships are closing . The " Enterprise " then goes to warp . Act Four . Phlox enters Archer ' s ready room and apologizes , telling him there was nothing he could do . Kessick has died . Fortunately for Archer , Kessick told Phlox something with his dying breath , saying that Archer would know what he meant . They are the co - ordinates . Tucker tells Reed that he ' s been in the shower for two hours , but still can ' t get all of the trellium out of his hair and from under his nails . He also tells Reed that the rescue team did a pretty good job , but he ' s sure that Reed ' s security team could have done just as well , which Reed dismisses with a smile . Reed says goodnight to Tucker , who enters sickbay . He asks Phlox for something to sleep , so Phlox gives him an injection . He then asks Tucker to deliver some bioscans to T ' Pol ' s quarters , as he is busy with work . Tucker says it is no problem . As he leaves , Phlox walks to a comm panel and contacts T ' Pol , saying that she has her work " " cut out for her . " " He also says that he injected Tucker with a placebo . Tucker arrives at T ' Pol ' s quarters , giving her the bioscans . T ' Pol asks him to sit down . Tucker says he wouldn ' t be very good company , and still needs to take a few showers . T ' Pol offers him a cup of tea , but he graciously declines . T ' Pol says that she has been having trouble sleeping as well . She says that Vulcan science teaches them to prompt their own bodies to create medicine , but she can ' t reach the neural nodes that need stimulating . She asks Tucker to help her , then offers the same in return . Unfortunately , Tucker thinks she ' s making sexual advances , before claiming that his ' sedative ' is starting to kick in , but T ' Pol tells him about the Vulcan neuro - pressure that Phlox wanted him to try . T ' Pol says she told Phlox this wouldn ' t work , that Trip is intransigent and unwilling to compromise . Trip protests that he is too willing to compromise . " Then take off your shirt . " He does , and T ' Pol begins the treatment . " Enterprise " arrives at the co - ordinates given to them by Kessick . There is no sign of technology , ships , or even planets . Archer fumes that he lied to them , but Trip questions why the Xindi would use his last breath to lie about the location of his homeworld . Mayweather detects a debris field , too big for a ship . T ' Pol discovers that it was a planet , 120 years in the past . Trip detects indicators that there had been a civilization there , including an alloy that matches the probe that attacked Earth . Archer orders them deeper into the Expanse , although Reed detects more concentrated spacial distortions ahead . In the Xindi Council chamber , Dolim reports that " Enterprise " has scanned the debris field and left . They are headed for the Orassin distortion field . Jannar laughs , saying that it is unlikely they ' ll survive . The Xindi - Insectoid councilor thinks they may survive , and wants to destroy them instead . Degra says it would be best to remain hidden , in case it is the first ship of an invasion force . The Xindi - Insectoid tells them to finish the weapon quickly or he will destroy " Enterprise " , with or without the council ' s approval . Memorable quotes . " " Military Assault Command . . . " " " " Captain Archer said he wanted the best . " " " " Try not to breathe . " " " " I ' m certain , with your delicate guidance . . . " " " " Delicate ' is not a word I associate with Mr . Tucker . " " " " Why would you do this ? " " " " Unfortunate accident . " " " " You know , I ' m not sure why but I ' m just itching to kick the hell out of you ! " " " " Trip – take it easy . " " " " If they get back to their starship , I ' ll lose nearly a hundred new workers ! " " " " Sewage takes on a whole new meaning when it comes from . . . a dozen different species . " " " " The son of a bitch lied to us ! " " " " The doctor injected you with a placebo . He sent you here because he wanted me to persuade you to try Vulcan neuro - pressure . As I predicted it was a pointless exercise . " " " " Why didn ' t he just ask me ? " " " " He did . You refused . " " " " Please disrobe . " " " " The doctor knows how intransigent you can be . " " " " Intransigent ? " " " " Unwilling to compromise . " " " " I know what it means , but it just so happens , it ' s not true . I ' m as willing to compromise as everyone else . . . " " " " Then take off your shirt . " " Links and references . References . Analogy ; antimatter relay ; Atlanta ; base pair ; cargo bay ; celsius ; chimpanzee ; cobalt ; command center ; conduit ; corporal ; debris ; Delphic Expanse ; Denobulan ; Duluth ; duranium ; Earth ; epithelial cell ; EV suit ; finger ; grav - plating ; high school ; hypospray ; insomnia ; insulation ; Kiaphet Amman ' sor ; lever ; lie ; linguist ; liter ; logic ; MACO ; major ; McFarlane ; Minnesota ; Neanderthal ; neural node ; neuro - pressure ; Orassin distortion field ; placebo ; platinum ; prison break ; REM ; saliva ; scale ; sedative ; sergeant ; sewage ; sex ; " " ; " Shuttlepod 2 " ; skin pigmentation ; spatial anomaly ; steel ; tactical alert ; tea ; tissue sample ; trellium - D ; trellium mining planet ; vertebra ; Vulcan ; Vulcan ( planet ) ; windmill ; Xindi ; Xindi - Arboreal ; Xindi - Aquatic ; Xindi - Aquatic councilor ; Xindi Council ; Xindi - Insectoid ; Xindi - Primate ; Xindi probe ; Xindi - Reptilian ; Xindus