Harbinger ( episode ) " Enterprise " rescues an alien from a massive spatial anomaly , but its lone pilot refuses to explain why he was there . Reed and Hayes confront each other over their roles on the ship . Summary . Teaser . Commander Tucker is in his quarters , practicing Vulcan neuro - pressure on Corporal Amanda Cole ' s foot rather than his usual partner , T ' Pol . After completing a few other pressure points , Cole turns round , and stares at Tucker . She kiss es him , and then walks out , leaving him looking surprised , but happy . Act One . Captain Archer calls Lieutenant Reed to his ready room to discuss training sessions with the MACO s . Major Hayes has already discussed including the senior officer s in the training sessions , but Reed has some objections to taking orders from the major . However , he reluctantly accepts his orders . On the bridge , Ensign Mayweather comments that the star s directly ahead appear to be shifting positions . The proceeds to investigate the phenomenon . They arrive to find that it is a convergence of a large number of spatial anomalies . Ensign Sato picks up a weak transmission coming from within the disturbance . T ' Pol identifies its source as a small pod containing one humanoid life sign . Archer instructs Reed to deploy the grappler , and they attempt to remove the pod . Upon trying to pull the pod out , the disturbance suddenly expands and envelops the primary hull . Small spatial disturbance s begin forming on the bridge , disrupting a few systems , and ammonium sulfide starts accumulating in the atmosphere . The captain orders full reverse from the engineering crew , and the manages to escape , along with the pod . Dr . Phlox asks T ' Pol to join him in sickbay to discuss Corporal Cole . She has been to see the doctor because of headache s , which Phlox associates with the neuro - pressure sessions she ' d been receiving from Commander Tucker . Phlox recommends that T ' Pol should try to remedy the situation by conducting further sessions with the corporal , and that Tucker should be discouraged from continuing with her . Meanwhile , Reed and Hayes argue over the timing of the training sessions , much to the major ' s exasperation . Reed is unhappy about the major going over his head with his recommendation to the captain . In the launch bay , Archer , Reed and Tucker open the pod , and discover a humanoid inside , alive , with many electrodes connecting him to the pod . Act Two . They take him to sickbay , where Phlox tries to revive the alien . In the command center , T ' Pol has been working on the readings from the disturbance , and has gathered some interesting data . She has deduced that the disturbance is located exactly in the center of five spheres . Archer hypothesizes that the spheres are the cause of the disturbance . In one of the cargo bay s , Major Hayes has set up a session of hand - to - hand combat , and the MACOs and the senior officer s are paired up against each other . Cole immediately pairs with Tucker . Both groups appear to be equally matched , much to Reed ' s relief . The session goes well , until one of the MACOs goes over the top with Mayweather . Mayweather seems to not be too badly hurt , but Reed stops the session , and demands that the major keeps control of his soldiers . Hayes disagrees there is an issue , and the animosity between them continues . T ' Pol and Tucker discover evidence that the pod is associated with the makers of the spheres . T ' Pol shares this information with the captain , who speculates that the alien is a " canary in a coal mine , " intentionally placed in the disturbance to monitor its effects . The captain wants the doctor to revive the alien , but Phlox states that ' s unethical . Archer says they ' re going to have to bend a few ethics . Act Three . In T ' Pol ' s quarters , she is conducting a neuro - pressure session with Cole . They discuss Cole ' s apparent attraction to Tucker , which she admits to , much to the surprise of T ' Pol . The doctor confirms to Archer that the alien is dying , but not just dying – he is disintegrating . There isn ' t much that Phlox can do to stop the alien ' s demise . Hayes sets up a weapon targeting session as part of his new training regime . Reed doesn ' t score very high in his first attempt , much to his disappointment , and he isn ' t consoled by the major ' s comments . The major then scores considerably higher – on a higher level – and states that the record for this training exercise is held by Cole . Afterward , in the crew ' s mess , Tucker engages Reed in discussion concerning the training sessions . Reed doesn ' t wish to discuss Major Hayes , but is more interested in the rumors of a relationship between Cole and Tucker . Tucker is equally not keen to follow this line of conversation . The alien ' s condition continues to deteriorate , and he continues to demand to be returned to the disturbance site . However , Archer is adamant that he needs more answers about why he was there . Finally the alien reveals that he is from a trans - dimensional realm . He demands to be returned to his pod , even though he knows he will die . Tucker goes to see T ' Pol for his neuro - pressure session , and discusses his situation with Cole with her . T ' Pol learns that Tucker is attracted to her , and quickly kisses him before taking off her clothes and kissing him again . . . In sickbay , the Doctor talks to the steadily sickening alien about Denobula and Earth . As the Doctor turns away to consult a medical screen , the alien attacks him , knocking him unconscious and discovering that he can pass through solid material as his arm passes through Phlox ' s neck . After briefly examining his hand in surprise and testing this new - found ability on the sick - bay wall he then precedes to walk through the sickbay wall . Act Four . The alien ' s passage through the ship causes ship - wide power failures that T ' Pol notes are a way to track his progress . Meanwhile , Reed and Hayes ' conflict has escalated , and they are in the middle of a big fight , which began as " sparring " but has escalated ; clearly , this is personal . Both men trade having the upper hand , but what is now nothing short of a brawl is broken up when they are called to duty to attempt to track down the alien . They intercept him , but their weapons ' fire passes right through the alien ; they have no effect . In engineering , Tucker encounters the alien , but is knocked unconscious seconds before the MACOs and Reed arrive . The alien then pushes his hand into the warp core , destabilizing the magnetic seal s . With Hayes ' help , Reed is able to reverse the polarity of the field coil s , and this repels the alien . The next day , Tucker and T ' Pol discuss their intimacies over coffee and tea in the crew ' s mess . T ' Pol thanks Tucker for his assistance of her " exploration of Human sexuality " . They both agree to keep their dalliance between themselves , in fact Tucker , feeling uncomfortable with T ' Pol ' s logical approach to the matter , suggests they " forget it ever happened " , but , as an afterthought , suggests that they need not discontinue their Vulcan neuro - pressure sessions together . Hayes and Reed are called to the captain ' s ready room for a dressing down because of the wounds they inflicted on each other during their fighting . The captain orders their dispute to be ended immediately , though Reed and Hayes both confirm that the dispute has already been settled . When the captain leaves , a bit of humor is added when Reed and Hayes are left wondering if they ' re dismissed yet . Back in sickbay , the alien deteriorates further , and disintegrates completely , but not before telling Archer that his people are somehow involved with the Xindi plan to destroy Earth . Memorable quotes . " " I ' ve noticed that you and Corporal Cole have become somewhat friendly . " " " " Friendly ? " " " " Last week you were eating together in the mess hall , and in the training session yesterday she touched your behind . " " " " You ' ve been keeping a pretty close eye on us . " " " " You ' re hard to miss . " " " " Captain , this man is dying a painful death . To keep him conscious is unethical . " " " " Until I get the answers I need , we ' re going to have to bend a few ethics . " " " " You and Commander Tucker appear to enjoy each other ' s company . " " " " We do have a lot in common . Did he tell you we grew up less than fifty kilometers from each other ? " " " " He didn ' t mention it . " " " " Our high schools were rivals . We went to the same movie theaters . What are the odds ? " " " " Extremely low . " " " " You two really ought to declare a truce . " " " " Oh , no . This is a fight to the death . " " " " You have to admit , the extra training isn ' t such a bad idea . " " " " Just . . . drop it . " " " " Why were you giving Amanda Cole neuro - pressure , anyway ? " " " " What ' s it to you ? " " " " Well , from what I ' m told , it ' s a pretty intimate procedure . . . for just friends . " " " " I do it with T ' Pol . Are you implying there ' s something going on there as well ? " " " " That ' s the rumor . " " " " Look , for the last time , there ' s nothing going on with any of us . . . between any of us . " " " " Right , you ' re all just friends . " " " " That ' s right . " " " " Huh . I guess this Vulcan neuro - pressure isn ' t that intimate , after all . " " " " Exactly . " " " " In that case , I ' ve got a nasty little pain just . . . " " " " Just drop it . " " " " That ' s it ! Stay loose . . . excellent ! You ' re improving . " " " " As you were ! " " " " What was that ? " " " " It was a little Klingon move I picked up . " " " " I don ' t know who did more damage to the engine , the alien or Malcolm . " " " " The last thing I need is to hear is that two of my senior officers have been admitted to sickbay because they suddenly regressed to the level of five year olds . " " " " Captain . . . " " " " Don ' t try to tell me who started it ! " " " " Think we ' re dismissed ? " " " " When the Xindi destroy Earth , my people will prevail . " " Links and references . References . ammonium sulfide ; biometric data ; canary ; cellular degeneration ; corporal ; Degra ; Delphic Expanse ; Denobula ; Earth ; ethics ; exercise ; feedback pulse ; Florida ; Friday ; gravimetric disturbance ; hand - to - hand combat ; headache ; helm ; high school ; inflection ; Jupiter Station ; kidney ; kilometer ; kiss ; Klingon ; life support ; light year ; lunar survival training ; magnetic containment ; Makers ; meter ; Military Assault Command Operations ; miner ; movie theater ; navigational sensor ; osmotic eel ; plasma coil ; polarity ; pressure point ; private ; rat ; reaction time ; red giant ; retina ; senior officer ; sergeant ; shock ; Sim ; spatial anomaly ; spatial disturbance ; Sphere - Builder s ; Sphere - Builder transport pod ; Starfleet training ; tactical alert ; trans - dimensional realm ; Triannon ; Triannon mythology ; ; Tuesday ; t - valve ; Vulcan ; Vulcan High Command ; Vulcan neuro - pressure ; Wednesday