The Enterprise C enters the Enterprise D's time and space continuum, where they find Picard and crew in a constant state of war with the Klingons, and only Guinan knows it.



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The Enterprise is observing a celestial anomaly, something akin to a wormhole when a starship appears having traveled through it. To everyone's surprise, the ship is an earlier version of the Enterprise, the Enterprise-C commanded by Captain Rachel Garrett. The instant the Enterprise-C arrives however, history is changed. Captain Picard and his Enterprise are battle weary with the Federation having been at war with the Klingon Empire for 20 years. Lt. Tasha Yar is alive with Lt. Worf nowhere to be found. Guinan knows something is wrong and Picard realizes that the Enterprise-C must return to its own time and place if their time line is to be restored. Written by garykmcd

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Release Date:

17 February 1990 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


Michael Piller did some work on the screenplay, but left his name out of the credits. This was due to Writers Guild regulations relating to the limits of number of writers being credited to a single script. See more »


Captain Picard is stunned to hear that children should be on the Enterprise. But Wesley is still part of the crew in the alternate time line, although he was only on the Enterprise as a family member to begin with. Then again, it is possible that because of wartime, he may have had a quicker Academy education and been officially transferred onto the Enterprise as a junior officer. This is borne out by the fact that Wesley is wearing a full Ensign's uniform in Command red, rather than his Acting Ensign's "uniform" as seen in the unchanged time line. See more »


Guinan: [to Picard, after history has been altered] We need to talk. Somehow, this is all wrong. This is not the way it's supposed to be.
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Referenced in Star Trek: The Next Generation: Redemption (1991) See more »


Star Trek: The Next Generation Main Title
Composed by Jerry Goldsmith and Alexander Courage
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User Reviews

Excellent television
7 January 2017 | by (United States) – See all my reviews

Star Trek is no stranger to time travel stories (and I have to confess to a certain weariness towards the gimmick, at this point), but with 'Yesterday's Enterprise', they really hit on something special. The technical side of it involves a temporal rift, a Galaxy-class starship from the past, and an alternate universe (not to mention a more battle-oriented Enterprise-D, for which the color blue is very flattering); but it's the human drama that lends this episode its real emotional weight. Should Picard send the travelers back to their own time (and certain death) or keep them alive and hope the war with the Klingons will finally go their way? Mixed up in all of this is Tasha Yar - and I have to say, her presence isn't just a plot device, but an organic way for the writers to make up for her senseless exit in the first season. It just works, and it's really something to see it pulled off so well.

This is classic TNG all the way; big ethical issues, well-drawn characters and powerful storytelling; even Shooter McGavin gets to play a pretty solid character. And for me, one of the series' greatest moments is Picard's utterance of this line:

"Let's make sure history never forgets... the name... Enterprise."


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