← Open Interactive Timeline Board

Star Trek: The Next Generation

Alternate Universes/4. Science Fiction, Space Operas & Cyberpunk/Star Trek Canon Universe/Live-Action Series  •  Curated by Admin Timeline.sg

Star Trek: The Next Generation (1987–1994) follows Captain Jean-Luc Picard and the crew of the USS Enterprise-D as they explore the galaxy, encounter new civilizations, and face existential threats like the Borg. Key story arcs include the Q trial, the Borg invasion, and the series finale's time anomaly.

Chronological Storyline (43 Milestones)

Sep 28, 1987 CE

Encounter at Farpoint

The USS Enterprise-D under Captain Jean-Luc Picard is launched and immediately faces a trial by the omnipotent Q, who questions humanity's savagery. The crew must prove their worth by solving the mystery of Farpoint Station. #StarTrek #TNG

Oct 5, 1987 CE

The Naked Now

The Enterprise crew is infected by a polywater intoxication that lowers inhibitions, causing chaos and near-disaster. Data must take command to save the ship. #StarTrek #TNG

Nov 9, 1987 CE

The Battle

Picard is contacted by the Ferengi and given his old ship, the USS Stargazer, but a mind-altering device causes him to relive a past battle. Dr. Crusher and Data work to free him from the Ferengi plot. #StarTrek #TNG )

Nov 16, 1987 CE

Hide and Q

Q returns offering to make Riker a Q, testing his morality. Riker is tempted but ultimately rejects power, affirming humanity's potential. #StarTrek #TNG

Jan 11, 1988 CE

The Big Goodbye

Picard and the senior staff become trapped in a Dixon Hill holodeck program due to a system glitch, forcing them to solve a noir mystery to escape. This episode won a Peabody Award for its innovative use of the holodeck. #StarTrek #TNG

Jan 18, 1988 CE

Datalore

Data's evil twin brother Lore is discovered and almost destroys the Enterprise. Lore's manipulation of Data reveals deep questions about android humanity. #StarTrek #TNG )

Feb 8, 1988 CE

Heart of Glory

Klingon fugitives aboard the Enterprise seek to revive ancient warrior traditions, forcing Worf to confront his Klingon heritage. This episode deepens Klingon mythology in the series. #StarTrek #TNG

May 9, 1988 CE

The Neutral Zone

The Enterprise discovers a derelict 20th-century Earth ship with cryogenically frozen survivors. Meanwhile, the Romulans re-emerge after decades of isolation, raising tensions. #StarTrek #TNG )

Nov 21, 1988 CE

The Child

Deanna Troi becomes mysteriously pregnant and gives birth to a rapidly aging alien child, revealing itself as an entity testing humanity. This is the season 2 premiere. #StarTrek #TNG )

Feb 6, 1989 CE

The Measure of a Man

Data resigns his commission after being ordered to submit to disassembly for research; a hearing is held to determine if he is sentient property. Picard's defense establishes Data as a person with rights. #StarTrek #TNG #SciFi )

Mar 13, 1989 CE

Q Who

Q hurls the Enterprise into the Delta Quadrant, introducing the Borg, a terrifying hive-mind collective. The crew barely escapes, and Q's lesson forces Starfleet to prepare for a greater threat. #StarTrek #TNG #Borg

May 1, 1989 CE

The Emissary

Worf's former lover K'Ehleyr returns, and a Klingon sleeper ship from the 22nd century reawakens, threatening war. This episode advances Klingon politics and sets up Worf's later series. #StarTrek #TNG )

Sep 25, 1989 CE

Evolution

Wesley Crusher's nanoscience experiment goes awry, causing nanites to threaten the Enterprise. The episode highlights the dangers of nanotechnology and Wesley's growth. #StarTrek #TNG )

Oct 9, 1989 CE

The Offspring

Data creates an android child named Lal using his own positronic net. Starfleet orders the child for study, but Lal's failing positronic matrix leads to a poignant loss. #StarTrek #TNG )

Jan 1, 1990 CE

Sins of the Father

Worf is accused of treason against the Klingon Empire; he accepts discommendation to protect a conspiracy. This episode deepens the Klingon political saga and Worf's character. #StarTrek #TNG )

Feb 19, 1990 CE

Yesterday's Enterprise

A temporal rift causes the Enterprise-C to arrive from the past, altering history so that the Federation is at war with the Klingons. Tasha Yar sacrifices herself to restore the timeline. #StarTrek #TNG #TimeTravel

Mar 19, 1990 CE

The Defector

A Romulan defector claims an invasion is imminent, but Picard uncovers a trap to start a war. This episode explores Romulan deception and Picard's diplomatic skills. #StarTrek #TNG )

May 7, 1990 CE

The Best of Both Worlds (Part 1)

The Borg launch an invasion of the Federation; Captain Picard is captured and transformed into Locutus of Borg, posing a devastating threat. The season 3 cliffhanger ends with Riker ordering an attack on the Borg cube carrying Picard. #StarTrek #TNG #Borg )

Sep 24, 1990 CE

The Best of Both Worlds (Part 2)

The season 4 premiere concludes the Borg crisis; Picard is rescued after a risky plan, and the Borg are temporarily defeated. The episode cements the Borg as iconic villains. #StarTrek #TNG #Borg )

Oct 1, 1990 CE

Family

After his assimilation, Picard returns home to France to face his brother Robert and heal emotional wounds. This character-driven episode explores the aftermath of trauma. #StarTrek #TNG )

Nov 5, 1990 CE

Reunion

K'Ehleyr is murdered by Duras, prompting Worf to challenge him for his honor. The episode introduces the Duras family conflict and sets up the Klingon civil war. #StarTrek #TNG )

Feb 4, 1991 CE

The Drumhead

A paranoid Starfleet officer conducts a witch-hunt on the Enterprise, accusing crew members of treason. Picard defends Starfleet principles against fear and suspicion. #StarTrek #TNG

Apr 29, 1991 CE

The Wounded

A Starfleet captain goes rogue against the Cardassians, forcing Picard to stop him. This episode introduces the Cardassian Union and guest stars John de Lancie. #StarTrek #TNG )

May 6, 1991 CE

The Mind's Eye

Geordi is brainwashed by Romulans to assassinate a Klingon governor, escalating tensions. This episode highlights Romulan manipulation and La Forge's vulnerability. #StarTrek #TNG )

Jun 17, 1991 CE

Redemption (Part 1)

The Klingon civil war erupts; Worf resigns from Starfleet to help his brother, but the Romulans secretly aid Duras. The season 4 finale ends with a Romulan attack. #StarTrek #TNG )

Sep 23, 1991 CE

Redemption (Part 2)

The season 5 premiere resolves the Klingon civil war with Picard exposing Romulan involvement and Worf restoring honor to the House of Mogh. Data temporarily commands the Enterprise. #StarTrek #TNG )

Nov 11, 1991 CE

Unification (Part 1)

Spock travels to Romulus to pursue reunification of Vulcans and Romulans; Picard follows to investigate Romulan involvement with the Klingons. This two-parter features a historic meeting between Picard and Spock. #StarTrek #TNG #Spock )

Nov 18, 1991 CE

Unification (Part 2)

Picard and Spock foil a Romulan plot to invade Vulcan, and Spock remains on Romulus to continue his work toward reunification. This episode bridges TNG and classic Trek. #StarTrek #TNG #Spock )

Feb 10, 1992 CE

The Inner Light

Picard is struck by an alien probe and lives an entire lifetime as Kamin on a dying planet. This deeply emotional episode explores memory and loss, and is widely regarded as one of Star Trek's best. #StarTrek #TNG #SciFi )

Mar 16, 1992 CE

Time's Arrow (Part 1)

Data's severed head is discovered in 19th-century San Francisco, leading the crew to travel back in time to investigate. They encounter Mark Twain and an alien predator that feeds on life-force. #StarTrek #TNG #TimeTravel )

Mar 23, 1992 CE

Time's Arrow (Part 2)

The season 5 finale concludes the time-travel adventure; the crew defeats the aliens and ensures Data's head remains to create a time loop. Twain returns to the present. #StarTrek #TNG #TimeTravel )

Oct 5, 1992 CE

The First Duty

Wesley Crusher is involved in a cover-up of a flight training accident at Starfleet Academy. Picard counsels him on integrity, leading to Wesley's personal growth. #StarTrek #TNG

Nov 2, 1992 CE

Tapestry

After dying from a heart condition, Q offers Picard a chance to change his past. Picard learns that his youthful impulsive decisions shaped his character, and he chooses to accept his life. #StarTrek #TNG #Philosophy )

Dec 14, 1992 CE

Chain of Command (Part 1)

Picard is captured by the Cardassians during a covert mission, and Riker must decide whether to rescue him. The episode introduces Cardassian torture. #StarTrek #TNG )

Dec 21, 1992 CE

Chain of Command (Part 2)

Picard endures brutal torture by the Cardassian Gul Madred, breaking his spirit but not his will. After rescue, Picard recovers with Troi's help, highlighting the cost of war. #StarTrek #TNG )

Feb 1, 1993 CE

Ship in a Bottle

Professor Moriarty from the holodeck becomes self-aware and threatens the ship to ensure his survival. This episode explores artificial intelligence and holodeck realities. #StarTrek #TNG )

Mar 22, 1993 CE

The Chase

Picard and his crew race against other species to solve a genetic puzzle left by an ancient progenitor race, revealing that humanoids share a common ancestor. This episode sets up later Star Trek lore. #StarTrek #TNG #Science )

May 10, 1993 CE

Cause and Effect

The Enterprise becomes trapped in a time loop, repeating a collision with another ship. The crew must use Data's memories and a poker clue to break the cycle. #StarTrek #TNG #TimeLoop )

Sep 20, 1993 CE

Descent (Part 1)

The crew encounters a Borg group led by Lore that acts independently of the Collective. Data is conflicted as Lore attempts to corrupt him with emotions. This is the season 6 finale. #StarTrek #TNG #Borg )

Sep 27, 1993 CE

Descent (Part 2)

The season 7 premiere continues the story; Data defeats Lore and the rogue Borg, but the experience leaves Data embracing his humanity. Lore is deactivated. #StarTrek #TNG #Borg )

Feb 7, 1994 CE

The Pegasus

Riker must confront his past when the Enterprise discovers a lost Federation ship with a prototype cloaking device that violates treaties. Picard stands by ethics over orders. #StarTrek #TNG )

Mar 14, 1994 CE

Lower Decks

The episode focuses on junior officers on the Enterprise, providing a ground-level view of Starfleet life. It highlights sacrifice and camaraderie among the lower ranks. #StarTrek #TNG )

May 23, 1994 CE

All Good Things...

The series finale features Picard traveling through time, revealing a future where humanity is on trial again. With Q's help, Picard saves the past and present, proving humanity's potential for growth. #StarTrek #TNG #Finale )