Editing Worf (section)

=== ''Deep Space Nine'' ===
In 2371, he was promoted to [[lieutenant commander]] (''[[Star Trek Generations]]''). After the destruction of the ''Enterprise''-D, Worf took an extended leave to evaluate his future. He was at a monastery on the Klingon colony of Boreth when he was ordered to go to Deep Space Nine to advise [[Benjamin Sisko|Captain Sisko]] when a Klingon fleet massed at the station. When he arrived, he was met by former ''Enterprise''-D crew member and Deep Space Nine Chief of Operations Miles O'Brien. (''DS9'': "[[The Way of the Warrior (Star Trek: Deep Space Nine)|The Way of the Warrior]]").

Worf learned that the Klingons were planning to invade Cardassia because of a coup which they had been led to believe was engineered by the Dominion. Worf reluctantly informed Sisko, knowing this would jeopardize his status in the empire. After the invasion had begun, Gowron traveled to DS9 to ask Worf to join him in battle. Gowron believed the Federation was unworthy of Worf's loyalty because they would not fight the Dominion. Worf felt the war was wrong and he could not support it. Gowron punished him by reinstating Worf's discommendation, but this time executing it to the full degree, by stripping him and his family of his honor, lands, and titles, effectively bringing down the House of Mogh.

Worf submitted his resignation but Sisko rejected it because he still needed him. He had decided to rescue the members of the Cardassian council from certain death at the hands of the Klingons. In doing so, he was able to prove that there was no Dominion involvement by verifying their identities. The Klingons attacked the station in order to capture the council members but withdrew as Starfleet ships approached, fearing a war on two fronts.

At the end of the immediate crisis, Sisko convinced Worf to join the crew as Strategic Operations officer. In this role, he would coordinate all Starfleet activity in the Bajoran sector and act as [[Executive officer#Military|executive officer]] of the [[USS Defiant|USS ''Defiant'']], meaning he had to adjust to the requirements and obligations that came with the red "command personnel" uniform. For the first months, Worf had difficulties adjusting to life on the station, unintentionally overstepping his boundaries by acting as he did on the ''Enterprise'', putting him for a while at odds with Chief of Security Odo. For Worf, the station's life seemed just too much 'grey', subsequently requesting to relocate his quarters aboard ''Defiant''.

After the Klingon civil war, Kurn had gained a seat on the High Council. Worf's opposition to the war against Cardassia cost Kurn his seat on the council. Four months later, he arrived at DS9 seeking help from his brother to perform a ritual to die with honor. He felt that the ritual, which involved Worf killing him, was the only way to restore his honor. Initially disregarding orders from Sisko not to carry out the [[honor killing]], Worf failed in his first attempt to perform the ritual and later found he could not bring himself to do so again, as he had taken on a human feature of morality and would consider it murdering his brother. Worf arranged for his brother to have cosmetic surgery and his memory wiped so he could start a new life with no ties to the House of Mogh. Kurn now has the identity of Rodek, who believes he lost his memory after being hit by a plasma discharge (''DS9'' episode "[[Sons of Mogh]]"). When Rodek sees Worf, he asks him whether he is family. Worf bitterly replies that he has no family.

After a year of war between the Federation and the Klingons, Worf joined a team sent to investigate claims that Gowron was a changeling in disguise. Worf nearly killed Gowron in combat but at the last moment the impostor was revealed to be disguised as Gowron's military adviser General Martok. The discovery helped restore peace between the Federation and the Klingons and to Worf again being shunned by Gowron for not having killed him when he had the chance, reaffirming his dishonor. (''DS9'': "[[Broken Link (Star Trek: Deep Space Nine)|Broken Link]]", "[[Apocalypse Rising]]").

In early 2373, Worf became involved with DS9 science officer [[Jadzia Dax]], a Trill woman. She was familiar with Klingon customs due to the experience of the Dax symbiont's previous host, Curzon. She was the first non-Klingon that Worf could "physically" be with in the traditional Klingon way, although it still left bruises, cuts and broken bones.

While on a mission to the [[Gamma Quadrant]], Worf was captured by the Dominion and sent to a [[Jem'Hadar]] prison camp where he met the real [[General Martok]] and was reunited with the real [[Julian Bashir|Dr. Bashir]], who had both been captured and replaced by changelings. While the prisoners worked to escape, Worf entered a daily round of combat with each of the guards in turn. He earned the respect and admiration of Martok and even of the guards because he would not yield. Once the prisoners escaped, they managed to warn the station about the Bashir-changeling.

Upon their return, Martok was assigned command of the Klingon detachment on Deep Space Nine and command of the IKS ''Rotarran''. Martok asked Worf to be his [[Starfleet ranks and insignia|first officer]]. The ship had suffered many losses to the Dominion, and morale was low. Martok's refusal to engage the enemy, due to his Dominion incarceration, made things worse. Worf challenged him for command, but allowed Martok to win and retain command. This led to Martok regaining his warrior's courage and, with renewed vigor, he led the crew to their first victory against the Dominion. Understanding what Worf had done, Martok thanked him for reminding him of his duty as a soldier and offered him a place in his house as his brother. By joining the House of Martok, Worf's status in the empire was restored (albeit the House of Mogh remains stricken). Worf's son, Alexander, was also assigned to the ''Rotarran'' after joining the [[Klingon Defense Force]]. Though Worf was initially estranged by his now adult son, and skeptical of his son's desire to serve the Empire, he eventually reconciled with him, and his son joined the House of Martok as well. Worf continued to serve on the ''Rotarran'' after Sisko withdrew from DS9 at the beginning of the Dominion War.

When Sisko eventually returned with a fleet of Federation ships to retake the station, Worf and Martok lobbied Gowron to send Klingon ships to join the battle. The entry of the Klingon ships turned the tide and allowed the Defiant to break through and retake the station (''DS9'': "[[Favor the Bold]]", "[[Sacrifice of Angels]]").

Having helped liberate the station, Worf and Jadzia decided to get married. The wedding was a traditional Klingon ceremony which included a series of trials on Jadzia's part in order to gain the approval of Martok's wife to join the House of Martok. This almost ended in disaster, as the free-spirited Jadzia felt forced into a position rather than taking the matter seriously enough. Eventually, realizing its importance to Worf and counseled by Sisko that she needed to mature, Jadzia yielded and she was allowed to marry Worf.  (''DS9'': "[[You Are Cordially Invited]]").

In the ''DS9'' episode "[[Change of Heart (Star Trek: Deep Space Nine)|Change of Heart]]", Worf prematurely ended a mission to contact a [[Cardassian]] informant inside the [[Dominion (Star Trek)|Dominion]] in order to save his injured wife. The informant was subsequently executed by the Dominion, causing Captain Sisko to officially caution that Starfleet might not grant Worf his own command after this incident (being another official reprimand in Worf's records of consequence). However, Sisko added that, had he been forced to choose between his duty and his wife, he would have done the same thing.

By late 2374, Worf and Jadzia were married less than a year when they decided to try to have a child, despite the extreme difficulties posed by the disparate biologies of Trill and Klingons. While Worf was away during a mission, Jadzia visited the Bajoran temple on the station where she was attacked and killed by an alien possessing the body of [[Dukat (Star Trek)|Gul Dukat]], who had come aboard the station to destroy an Orb of the Prophet. (''DS9'': "[[Time's Orphan]]", "[[Tears of the Prophets]]")

[[Julian Bashir]] was able to save the [[Dax (Star Trek)|Dax symbiont]], which was sent back to the Trill homeworld to be rejoined with a new host aboard the USS ''Destiny''. When the symbiont's health worsened, the Dax symbiont was implanted into a new host named [[Ezri Dax]], who was the assistant ship's counselor. She had not been trained to be a host, but she was the only available unjoined Trill aboard. Ezri had difficulty making the transition and sought out Ben Sisko on Earth.

In 2375, Worf led a mission to destroy a Dominion shipyard. He dedicated this mission to his late wife, in order to ensure her entry into Sto-Vo-kor, the [[Valhalla]]-like realm of the honored dead, being joined by [[Quark (Star Trek)|Quark]], Bashir and O'Brien (''DS9'': "[[Shadows and Symbols]]").

Ezri helped Sisko on his mission, and then returned to DS9 with him (''DS9'': "[[Shadows and Symbols]]"). She accepted his request to stay on as station counselor. Worf avoided Ezri at first, confused about what to do about this new situation. Her quick posting to DS9 led to a number of awkward moments between her and Worf, since the new host carried all the memories of their former hosts but had its own distinct personality, despite their shared past. Also, it was considered [[taboo]] on Trill for new hosts to fraternize with former lovers. After a brief rekindling of their feelings for one another, they decided that things were just too different and, eventually, the two settled into a comfortable friendship, with Ezri eventually becoming romantically involved with Julian Bashir (who previously had feelings for Jadzia). This allowed Worf to accept 'his' Jadzia to have her place into Sto-Vo-Kor.

In 2375, Worf became concerned with the leadership of Gowron. The entry of the [[Breen (Star Trek)|Breen]] into the war on the side of the Dominion temporarily sidelined the Federation and Romulan fleets, which proved vulnerable to Breen weaponry. This left the Klingons alone to carry on the fight as their ships were not affected in the same manner. Gowron assumed direct command because he feared Martok's growing popularity and devised a plan to discredit Martok. He began ordering Martok on near-suicidal missions against Dominion forces, hoping that a string of defeats would weaken Martok's popularity and discredit him as a military leader. Recognizing that Gowron was jeopardizing the entire war effort for the sake of his personal pride, Worf tried to convince Martok that he should challenge Gowron for the leadership. After Martok refused, Worf challenged Gowron himself, citing his faulty battle planning, his dishonorable conduct in trying to discredit Martok, and poor strategies at the later stages of the Dominion War. After a brief battle, Worf killed Gowron; by right, he was proclaimed the new chancellor of the [[Klingon High Council]]. However, Worf declined in favor of Martok (''DS9'': "[[Tacking Into the Wind]]"). Ironically, it was again by Worf's hand the next chancellor of the Empire was decided (having slain Duras to allow Gowron's ascension after K'mpec's death), and the second time he and Gowron dueled, this time finishing Gowron off. As a token of respect, Worf performed the Klingon Death Howl after Gowron's death, essentially forgiving his misdeeds and recognizing a worthy warrior was on his way to Sto-Vo-Kor.

After the conclusion of the Dominion War, Worf was offered the position of the Federation ambassador to [[Qo'noS]] (the Klingon homeworld), as depicted in the ''Star Trek: Deep Space Nine'' series finale "[[What You Leave Behind]]".