Countdown , Number Four Summary . On the border of the Klingon and Romulan Empire s , General Worf and his fleet of Klingon Birds - of - Prey continue their assault on the " Narada " . However , their weapons have no effect on the " Narada " s advanced deflector shield s . Growing wearisome of Worf ' s attacks , Captain Nero has the " Narada " cloak , making his ship invisible to the Klingon s ' sensor s . The " Narada " then commences firing on the Klingon ships while cloaked , a trick Worf proclaims Nero must have stolen from the Klingons . With the Klingon ships disabled , Nero demands that Worf board a shuttle and surrender himself on behalf of the Klingon Empire . Worf orders his subordinate , K ' Relli , to prepare a shuttle ; when K ' Relli protests , Worf warns him not to question his orders again , and reminds him that Klingons never surrender . A shuttle departs Worf ' s ship , but stops short of the " Narada " s airlock ; Worf and a number of his subordinates then leave the shuttle in EV suit s and begin cutting into the " Narada " s hull . On the bridge of the " Narada " , Nero sends members of his crew to meet the invading Klingons . Meanwhile , on , the modifications to the " " have been completed and the vessel is ready for its mission into the Hobus star . Geordi La Forge informs Spock that the controls for the " Jellyfish " are encrypted so that they will only respond to Spock ' s voice . Captain Data then announces that the Klingon fleet has engaged Nero in battle , and Ambassador Jean - Luc Picard suggests that Spock depart on his mission now . In the meantime , the will assist Worf in the battle against Nero . Spock urges the others to remember that , at heart , Nero is a good man and that perhaps they can still save him from himself . Spock then leaves for the Hobus star aboard the " Jellyfish " , telling the others that , should their paths never cross again , he knows that the galaxy is in good hands . Back on the " Narada " , the Klingons and the Romulan s have engaged in hand - to - hand combat . Worf heads to the bridge , where Nero attempts to persuade him that the Federation is using Worf , just as Nero believes Spock used him to get what he wanted , but Worf is unfazed . Nero , having read about Worf in the " Enterprise " database and knowing he can only be defeated by surprise , attacks Worf from behind using a mechanical tendril , impaling him . As Worf , critically injured , hangs from the tendril , Nero tells him that after he destroys Vulcan and Earth , he will destroy the Klingon homeworld . The " Enterprise " , commanded by Data with Picard and La Forge also on board , arrives to find all that remains of the Klingon fleet is debris . The " Narada " then decloaks and Nero appears on the " Enterprise " s viewscreen , with the impaled Worf in the background . Nero notices that Spock is not aboard the " Enterprise " and deduces he has gone to stop the Hobus supernova . Picard attempts to reason with Nero , but the mad Romulan ignores him . Nero then offers to transport the barely - living Worf onto the " Enterprise " ; all the " Enterprise " has to do is lower its shields . Data and Picard figure that , should the " Enterprise " lower its shields , Nero will attempt to destroy them , and there is no guarantee that Nero will even return Worf . However , if they do not lower the shields , then Worf will most certainly die . Picard reasons that Nero will have to drop his own shields as well , which may be their only chance to stop him . If the " Enterprise " can restore its shields fast enough , then damage to the ship could be contained . Data makes a decision : he lowers the shields . Nero has the injured Worf beamed to the " Enterprise " , and then immediately opens fire on the Federation ship . The " Enterprise " manages to get its shields back online , but the ship sustains heavy damage in engineering and its warp engine s are disabled . Nero then takes the " Narada " to the Hobus star to stop Spock from accomplishing his mission . Data reports that damage to engineering is contained and that warp power will be restored in minutes . Picard hopes that will be enough time . As the " Jellyfish " nears the Hobus star , Spock sends out a subspace message detailing his mission . He notes that it will be impossible for him to escape the pull of the singularity he hopes to create , and thus he never expected to return . He asks that the message , should it ever be received , be delivered to the Vulcan Science Academy . He then delivers the red matter into the core of the Hobus star . Within moments , a black hole begins to form , consuming the supernova . As the singularity grows , the " Narada " decloaks . Nero tells Spock that he may have saved his own people , but he did so at the cost of Romulus . Nero is preparing for his revenge , but the singularity begins to pull in the " Narada " . Nero vows that he will have his vengeance as the " Narada " disappears into the singularity . With his task accomplished and the galaxy no longer threatened by the Hobus star , Spock resigns himself to his fate , telling his friends not to grieve , for it is only logical . He begins to say " " The needs of the many outweigh the needs of the few " " , but he is pulled into the singularity before he can finish . The " Enterprise " arrives to find no sign of the supernova , the " Jellyfish " , or the " Narada " . Picard realizes that Spock knew he wouldn ' t escape and that he sacrificed himself to save the galaxy . As the " Enterprise " continues on its voyage , Picard laments , " " May his soul live long . . . and prosper . " " TO BE CONTINUED . . . " ONSCREEN " IN " STAR TREK "