Star Trek: Enterprise (2001–2005)
4 user 3 critic

Zero Hour 

Archer takes Degra's ship to try to prevent Earth from being destroyed and gets some unexpected help. Enterprise tries to destroy Sphere 41, but the Sphere Builders know about the plan.


Allan Kroeker


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 4 more credits »




Episode cast overview, first billed only:
Scott Bakula ... Captain Jonathan Archer
John Billingsley ... Dr. Phlox
Jolene Blalock ... Sub-Commander T'Pol
Dominic Keating ... Lieutenant Malcolm Reed
Anthony Montgomery ... Ensign Travis Mayweather
Linda Park ... Ensign Hoshi Sato
Connor Trinneer ... Commander Charles 'Trip' Tucker III
Scott MacDonald ... Commander Dolim
Rick Worthy ... Jannar
Tucker Smallwood ... Xindi-Primate Councilor
Josette DiCarlo ... Sphere-Builder Woman (as Josette Di Carlo)
Bruce Thomas ... Xindi-Reptilian Soldier
Andrew Borba ... Xindi-Reptilian Lieutenant
Matt Winston ... Temporal Agent Daniels
Mary Mara ... Sphere-Builder Presage


Due to the intervention of the Sphere Builders, the coalition of Humans, Primates, Arboreals and Aquatics was unable to stop the weapon from being launched. It is now only 10 hours before the weapon arrives at Earth. Only one ship is capable of catching up: the lightning-fast, but nearly powerless ship of Degra. While Archer and a team embark on a seemingly impossible mission, they get some unexpected help. Meanwhile Enterprise is send to keep their promise to the Aquatics. T'Pol and Trip still believe the destruction of Sphere 41 will do the trick, but the Sphere Builders are aware of their plans. Written by Arnoud Tiele (

Plot Summary | Add Synopsis


TV-PG | See all certifications »


Official Sites:

Official Site




English | German

Release Date:

26 May 2004 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.78 : 1
See full technical specs »

Did You Know?


T'Pol finally reveals her age to Trip (66-years-old on her next birthday) - something Trip has been trying to learn since they left Spacedock. See more »


Travis, flying down to San Francisco in 1944, says everything "looks normal". But the inhabited regions of the Bay Area would be dramatically smaller, the Richmond-San Raphael Bridge (built 1957) and San Mateo Bridge (built 1967) would be missing. See more »


[first lines]
Commander Dolim: If they had made us the dominant species before the wars, our homeworld would still exist.
Xindi-Reptilian Lieutenant: And our Avian brothers would still fill the skies.
Commander Dolim: We should be grateful that the Guardians have finally come to their senses. Once Earth is destroyed, the Reptilians will take their rightful place at the head of a new Xindi empire.
See more »


Where My Heart Will Take Me
Written by Diane Warren
Performed by Russell Watson
Episode: {all episodes}
See more »

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User Reviews

The entire human race depends on Hoshi?! CRAP!!!
10 April 2015 | by MartinHaferSee all my reviews

The important thing to know about this episode that it pulls out all the stops and EVERYONE and EVERYTHING comes together at once to win the day for the human race and the nascent Federation...and in the end, it all boils down to Hoshi!!! NO!!!! Considering what a whiny thing she's been, then it looks like we are all screwed, right?! Well, maybe not.

The episode begins with the super-weapon coming towards Earth--with Archer in Degra's lightly armed ship in pursuit. At the same time, Enterprise is on a mission to destroy a sphere--and hopefully destroy the network of spheres.

In this show, there are lots of surprises--including a visit from my favorite character from the series. This one will keep your pulse pounding and is THE show to see from the series. A definite must- see and a thrilling finale to the Xindi war.

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