Descent, Part II (episode)
Picard tries to free Data from Lore's control; the Enterprise battles the Borg ship. (Season premiere)

Summary

Teaser 
After Lore reveals himself to Jean-Luc Picard, Deanna Troi, and Geordi La Forge, the three are confronted by the fact that Data and Lore are now working together. Lore and Data tell Picard that the end of biological life is at hand and the age of completely artificial lifeforms has begun. Lore had apparently found the Borg struggling with the sense of individuality that Hugh had contracted to the Collective. He sees himself and Data as something for the Borg to aspire to and believe in. Lore tells Picard that he, and all others like him, are obsolete. He has Data take them away.

Act One 
Dr. Beverly Crusher, now in command of the  with only a skeleton crew, faces the Borg ship that attacked the outpost on Ohniaka III and is closing in on their location. Crusher orders the ship to red alert and tries to speed up the recovery of the away teams on the planet. The new tactical officer, Taitt, shows obvious inexperience, having been posted there only six weeks prior. When the Borg ship is in firing range, Crusher waits for the last minute to raise shields. After the Borg fire on the Enterprise, Crusher returns fire with a pair of photon torpedoes, which do no damage to their vessel. The ship however, rescues all but 47 of the crew from the surface before escaping from the Borg attack. 

On the surface, Commander Riker and Worf head off to search for the captain's team, which is being led to a holding cell by Data and a Borg. Another team led by Lieutenant Powell will take cover and avoid contact with the Borg. Riker thinks they only have a few days until another Federation ship can arrive. Until then, he tells Worf, they are on their own.

Picard's team discusses with Data his newfound emotions, and Data responds by telling them how his journey towards being Human was "misguided" and an evolutionary step in the wrong direction. Data proclaims that he now sees the true way that things should be. He appears to be certain of what he's doing, but the others are certain he's being controlled. Data takes their combadges and La Forge's VISOR away before leaving. As he activates the force field around their cell, he states coldly, "I am not your puppet any more."

Act Two 
Lieutenant Barnaby relieves Taitt at tactical, but Crusher sends her to the bridge's aft science station to keep her on the bridge. She orders a buoy readied with their log entries and releases it into the transwarp corridor to transmit them to Starfleet. Crusher cannot leave Picard and the rest of the crew behind, so she orders that the Enterprise-D will go back to the planet. With the Borg still guarding the world, Barnaby comes up with a plan to drop out of warp in orbit of the planet while the Borg ship is on the far side to avoid detection and rescue the remaining crewmembers, but they will need every second they can get. Taitt is unsure, stating that they could speed into the planet's atmosphere if Barnaby's calculations are even slightly off. "Well, I'll just have to make sure my calculations are accurate, Ensign." Barnaby replies confidently. 

On the planet, Data brings La Forge's VISOR to Lore, who then puts it on and jokingly asks, "How do I look?" Data, not understanding, is confused. Lore remarks that Data will have to work on his sense of humor. Lore intends to experiment on La Forge's implants, saying it's needed to prevent further Borg deaths in the experimentation he has apparently been doing on them, unsuccessfully. All of the Borg drones Lore has experimented on so far have suffered from extensive brain damage. Lore tells Data that that is why he will be experimenting on La Forge and the others – to prevent these further Borg deaths. They are interrupted by Crosis, who brings a disobedient Borg named Goval to Lore because he was not letting Crosis hear his thoughts. Lore convinces Goval to comply and tells him that he needs him to help build a future for the Borg. 

La Forge, in the meantime, has been conspiring with Picard and Troi to find a way around the carrier wave that Lore is using to broadcast his emotions to Data. His ethical subroutines could be rebooted using a phased kedion pulse, it seems, but in the middle of the conversation, Data enters and takes La Forge away for experimentation without even stopping to talk.

Riker and Worf are following the trail of the captain when they are cornered by some Borg, who take them into a cave. Surprisingly, they find Hugh, who is quite angry in seeing them.

Act Three 
Hugh, apparently the leader of an underground group of Borg, does not like the return of the crew of the Enterprise, whom he blames for the current state of the rogue Borg. He explains the effect his individuality had on the Collective, that all the Borg's voices became increasingly discordant, leading to total dysfunction. They would listen to any voice to end the resulting confusion, and then they encountered Lore, who promised clarity and purpose to the Borg that were not connected to the Collective anymore. He shows Riker and Worf the results of the experiments that Lore is attempting on the Borg, to the end of becoming a superior race: two individuals in an obviously bad state. However, he agrees to show Riker and Worf a way into the compound to save his friend, La Forge.

La Forge, meanwhile, is strapped to a table to undergo an experiment. Data comes in with Picard's voice in an attempt at humor, unsuccessfully. Data explains the procedure of replacing control of his cognitive abilities with an artificial neural network, which has a 60% mortality rate. La Forge explains Lore is manipulating him, but he ignores him. 

In the cell, Troi, standing over the body of Picard, calls a Borg over to help her. When the Borg leans over to check out Picard, the Captain pulls out a cable on the Borg's neck. Picard then steals the interlink transceiver while Troi takes the weapon from the Borg's arm to check the hall. There, she finds Data escorting La Forge back to the cell. Data takes the weapon and leaves with the Borg, unaware of the lost transceiver. Picard then begins to modify it to help activate Data's ethical subroutines, with La Forge's guidance.

The Enterprise drops out of warp and transporter chief Salazar transports the last of the crew off of the surface, but informs the bridge that six people (Picard, Riker, Troi, Worf, La Forge, and an officer who had been killed by the Borg) still remain. Just as the Borg ship returns for another fight, Crusher orders shields up, but the Enterprise takes a hit which disables their warp drive. Retaliating with phasers, the Borg ship fires again which takes a toll on the shields. Crusher then orders the Enterprise into the nearby sun's corona, much to Taitt's disbelief.

Act Four 

Approaching the star, Crusher orders Barnaby to activate the metaphasic shielding, but he reminds her that the shield is still in an experimental stage. Once activated, it works; it lowers the radiation level and temperature of the hull while getting the Borg ship off their tail. The Borg take a relative position, letting them know that they will wait until they come out of the sun. Crusher wonders how long they can stay in the sun's corona.

Picard has finished modifications on the interlink transceiver, and places it near the force field, activating the pulse that will reset Data's subroutines. Meanwhile, Data is ready to irradiate La Forge's brain s and begin construction of a positronic net to take the place of his biological brain. However, the pulse works, and at La Forge's coaxing, Data thinks of a false excuse to not destroy La Forge's brain yet.

Outside, Lore and Data are chatting regarding La Forge. Data then projects accountability towards his comrades, stating that if they die, he is responsible, since they came after him. Lore wonders if something is wrong with Data's systems, then begins to induce pain within Data. Under duress, Data asks for more emotions, which Lore gives. As soon as he leaves, Crosis emerges and Lore wonders if Data has the strength to help Lore in his plan.

Act Five 
Faced with only a few minutes of metaphasic shielding left, Taitt, having done her senior honors thesis on solar dynamics at the Academy, thinks up a plan to create a solar eruption to destroy the Borg ship. Barnaby objects, reminding Taitt that this is not the Academy, and that comparing the two is a long way from actually trying it. Taitt assures him that she's got a targeting sequence lined up and has reconfigured the tractor beam emitters to fire a particle beam onto the surface of the sun. Barnaby tells her if her calculations are wrong, the eruption could obliterate the Enterprise as well. Taitt bluntly reassures him, echoing his own retort from earlier. After firing phasers and using the tractor beam, the Borg ship is destroyed, to the surprise and delight of Barnaby. Taitt just gives him a sly grin. With the Borg ship destroyed, the Enterprise is free to orbit the planet again.

Back on the planet, Data returns with La Forge and then takes Picard, who begins to confuse Data by activating portions of his ethical subroutines. Lore interrupts them, and, as part of a ceremony, orders Data to kill Picard. The ethical subroutine has been activated, and Data tells Lore that that would be wrong. Beneath the surface, Riker and Worf use the environmental conduits to get to the central room, and then attack at a key point in the events when Lore was about to kill Data. Hugh tackles Lore, preventing him from killing Data. The Borg fight back and amongst themselves. In the chaos that ensues, Lore escapes from the room, and Data follows. As Lore tries to coerce Data into leaving the planet with him, Lore tries to throw Data off-balance by giving him more emotions. Data reacts but recovers enough to shoot and disable Lore. Data walks over to his nearly unconscious brother and proceeds to deactivate him once and for all. Lore's last words before his deactivation are, "I love you, brother."

Picard, Riker, and Worf thank Hugh and welcome Data back to normal functioning. Picard hints that even though Hugh is unsure of their future, perhaps these Borg have a good individual leader for the future.

Back on the ship, La Forge enters Data's quarters and walks over to his desk, where Spot is lying. La Forge tells Data that he will return to duty soon. Data is relieved at this, and shows La Forge the damaged and inoperative emotion chip that was retrieved from Lore's body. He is about to destroy it with a phaser, because his friendship with La Forge is more important to him than emotions, and emotions are what caused him to harm and nearly kill his friend. La Forge stops him and says that perhaps someday they will be able to use the emotion chip. After all, it is Data's lifelong dream to have emotions, and, as La Forge concludes, "I wouldn't be very much of a friend if I let you give up on a life-long dream now, would I? Maybe some day, when you're ready."

Memorable quotes 
"They had lost their sense of purpose. Well, I gave them their purpose… and they gave me mine."
 - Lore, on the Borg he discovered and later became leader of

"The reign of biological life-forms is coming to an end. You, Picard, and those like you, are obsolete!"
 - Lore

"Give me your VISOR."
"Why?"
"Give it to me… or I will take it by force!"
 - Data and La Forge

"I now realize that my life aboard the Enterprise was a waste. My quest to become Human, misguided. An evolutionary step in the wrong direction… I am not your puppet anymore!"
 - Data, under Lore's influence

"What's your name?"
"Taitt, sir."
"I don't think I've seen you before."
"I was just posted here six weeks ago."
"Well, Taitt, I bet you never thought you'd be serving as Tactical Officer after only six weeks."
"No, sir, I sure didn't!"
 - Crusher (as Acting Captain) and Taitt

"Establish a frequency shift firing pattern and return fire!"
"Uh… right!"
 - Crusher and a slighty nervous Taitt, during battle with the Borg

"If your calculations are even slightly off, we'd hit the atmosphere."
"Well, I'll just have to be sure my calculations are accurate, Ensign."
 - Taitt and Barnaby, when Barnaby suggests taking the Enterprise out of warp and instantly entering orbit

"If her calculations are off that eruption could encompass us!"
"Well, I'll just have to make sure my calculations are accurate, Lieutenant."
 - Barnaby and Taitt, later on

"Yes please, I want more!"
 - Data about emotions

"Lore. I must deactivate you now."
"Without me, you will never feel emotions again."
"I know. But you leave me no other choice."
"I… love you… brother."
"Goodbye, Lore."
 - Data and Lore, having their final conversation

"We can't go back to the Borg Collective… and we no longer have a leader here."
"I'm not sure that's true."
 - Hugh and Picard

"Data, I wouldn't be very much of a friend if I let you give up on a lifelong dream, now would I? Maybe… someday, when you're ready."
 - La Forge stopping Data from destroying his emotion chip (last lines)

Background information

Production history 
 Final draft script:  
 Premiere history: 
 First UK airdate:

Story and script 
 Writer René Echevarria recalled, "Part I left many balls in the air and I had to catch them. We had a better idea of what this Part II was going to be like, but nothing turned out quite as simple as it seemed." ()
 Jeri Taylor noted, "[W]e had too much story to tell. It was an embarrassment of riches that a lot of things had to get short shrift. The Lore/Data thing took over, forcing us to almost ignore Hugh, who became a very minor kind of character. We were trying to deal with themes of cults and how a charismatic leader can lure and beguile people. But we had so many themes." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 289)
 In developing the cult theme, Michael Piller and the writers were inspired by  and the . (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 289)
 In an early draft, Barclay was to be on the bridge as part of the skeleton crew. Due to availability and cost issues, Ensign Taitt was written to take his place. Echevarria noted that in any event, Barclay was "quite senior and would have been down there – foolishly – with everybody else!" ()
 The first draft of the script had Data kill Lore in self-defense in a lengthy phaser battle, but Michael Piller suggested a less overt means. ()

Production 

 The Borg building in this and the previous episode is the Brandeis-Bardin Institute. This institute was previously used as Camp Khitomer in . ()
 Visual effects supervisor Dan Curry recalled that the location shooting was done on a day where temperatures reached 100 degrees Fahrenheit. "Those Borg extras were dying. They had to wear black longjohns under those rubber suits." ()
 Interiors of the compound were a narrow three-wall set that was multiplied optically, along with the Borg extras. These were left standing over hiatus, but the caverns were built for this episode. ()
 The terminal that Lore is working at just prior to his deactivation is the same prop as the theta-band wave emitter in .
 Several costumes and props from this episode were sold off on the It's A Wrap! sale and auction on eBay, including costume parts for Michael Reilly Burke.

Continuity 
 Jonathan Del Arco reprises his role as Hugh from the TNG's fifth season episode . However, he shares no screen time with Geordi, with whom he had the closest relationship in the earlier episode, although their friendship is mentioned.
 According to Jonathan Del Arco, "Rick Berman said in an interview, 'The storyline that ended in 'Descent II' will be continued later in the season.' You'll find out what happens to this group of Borg that are left with me on this planet. You don't know what is going to happen. It really depends on if the audience wants to see the characters again. I think one reason Hugh came back is they got a lot of mail." A reprisal of Hugh on  was also not out of the question. (, , p. 39). However, Hugh was not seen again on screen in either TNG or DS9. A reprisal, to some extent, of the storyline takes place in .
 There are 47 crew members left on the planet after Dr. Crusher takes the Enterprise out of orbit.
 Crusher's support for the experimental metaphasic shielding technology was the focus of . In that episode James Horan played Jo'Bril, an alien trying to steal the shield technology, while in this episode he plays Lieutenant Barnaby.
 Lore's final scene is similar to the deactivation of the  in 2001: A Space Odyssey.
 At the end of the season it is implied that Data would eventually begin to use the emotion chip, as shown in the alternate future timeline of  in which he remarks that his housekeeper makes him laugh. The emotion chip was next seen in , where it became fused into Data's neural net, forcing him to learn to deal with having emotions on a permanent basis. He eventually gains the ability to deactivate, and later remove completely, the chip in  and . The design of the emotion chip seen here is different than the one seen in .
 La Forge mentions that Data sank to the bottom while attempting to swim at Devala Lake, though in  it is shown that Data has been designed to act as a flotation device.

Reception 
 Brent Spiner was disappointed with the episode. He commented, "I don't think it was as good as it could have been. There was a real nice potential there, but it was too mammoth an undertaking in the seven days we're allotted to do shows. There was a nice subtext. Lore wasn't really just villainous, he believed in what he was doing." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 289)
 Jeri Taylor admitted, "Maybe it was just too ambitious, because we were not able to do justice to any one of the themes. We spread ourselves so thin and that was our mistake." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 289)
 Brannon Braga was also not enthused. "I think 'Part II' was less successful than 'Part I' in that not enough time was developed to the relationship between Geordi and Data and Data's experience with these strange, warped, addicting, dark emotions. Unfortunately you had all these disparate elements […] We thought that would sustain the excitement when, in fact, in my opinion, it just served to take away from the more interesting elements."  Braga added, "Nevertheless, it was action-packed and successful on that level." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 289)

Video and DVD releases 
 UK VHS release (two-episode tapes, CIC Video): Volume 77, catalog number VHR 2739, 
 As part of the UK VHS collection Star Trek: The Next Generation - Borg Box: 
 In feature-length form, as part of the UK VHS release Star Trek: The Next Generation - The Full Length TV Movies: Volume 8, catalog number VHR 4108, 
 As part of the US VHS collection Star Trek: The Next Generation - The Data Collection: 
 As part of the TNG Season 7 DVD collection
 In feature-length form, as part of the Star Trek: The Next Generation - The Complete TV Movies collection
 As part of the Star Trek: Fan Collective - Borg collection

Links and references

Starring 
 Patrick Stewart as Capt. Jean-Luc Picard
 Jonathan Frakes as Cmdr. William T. Riker

Also starring 
 LeVar Burton as Lt. Cmdr. Geordi La Forge
 Michael Dorn as Lieutenant Worf
 Gates McFadden as Dr. Beverly Crusher
 Marina Sirtis as Counselor Deanna Troi
 Brent Spiner as Lt. Commander Data / Lore

Guest stars 
 Jonathan Del Arco as Hugh
 Alex Datcher as Taitt
 James Horan as Barnaby
 Brian Cousins as Crosis

Co-stars 
 Benito Martinez as Salazar
 Michael Reilly Burke as Goval

Uncredited co-stars 
 David Keith Anderson as Armstrong
 Majel Barrett as Narrator
 Pam Blackwell as Borg
 Steven Boz as
 Borg
 Operations ensign
  as Spot
  as Spot
 Debbie David as
 Borg
 Russell
 Tracee Lee Cocco as 
 Crippled Borg drone
 Jae
 Debra Dilley as Borg
 Gary Hunter as Borg
 Debbie Marsh as command ensign
 Rad Milo as operations ensign
  as Spot
 Joe Murphy as Borg
 Ivonne Perez as command officer
 Craig Reed as crippled Borg drone
 Joycelyn Robinson as Gates
 Rick Ryan as Borg drone
 Richard Sarstedt as command ensign
 Adrian Tafoya as Borg
 Oliver Theess as officer
 Rogan Wilde as Borg
 Unknown performers as
 Andrew Powell (voice)
 Gates (voice)
 Seven Borg drones

Stunt doubles 
 Brian J. Williams as stunt double for Brent Spiner
 Unknown stunt performer as stunt double for Brian Cousins

Stand-ins and photo double 
 David Keith Anderson – stand-in for LeVar Burton
 Debbie David – stand-in for Brent Spiner
 Michael Echols – stand-in for Michael Dorn
 Nora Leonhardt – stand-in for Marina Sirtis
 Lorine Mendell – stand-in for Gates McFadden
 Richard Sarstedt – stand-in for Jonathan Frakes
 Dennis Tracy – stand-in for Patrick Stewart
 Unknown actor – photo double for Brent Spiner

References 
acceleration; artificial lifeform; artificial neural network; automaton; biological lifeform; Borg; Borg Collective; Borg ship; buoyancy; carrier wave; C; cognitive function; counselor; decay rate; Devala Lake; dizziness; doctor; El-Baz; electromagnetic pulse; emergency buoy; emotion; emotion chip; evasive maneuvers; Federation; Federation space; firing range; hull; hull temperature; kedion pulse; kilometer; leader; Loresworld; Loresworld moons; Loresworld sun; metaphasic shield; meter; millicochrane; NCO; neural shock; Ohniaka III; orbit; pain receptor; particle beam; path; pawn; photosphere; pressure wave; puppet; rad; radiation; red alert; sailing; sense of humor; sensor array; shields; solar dynamics; solar fusion eruption; ; subspace distortion; Starbase 295; Starfleet; Starfleet Academy; swimming; tactical officer; team leader; temperature; test subject; transporter range; Transporter Room 3; transwarp; tricorder; VISOR

External links 
 
 
 
 

de:Angriff der Borg, Teil II
es:Descent, Part II
fr:Descent, Part II (épisode)
it:Il ritorno dei Borg - seconda parte (episodio)
ja:ボーグ変質の謎・後編（エピソード）
nl:Descent, Deel II
TNG episodes