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.



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Episode cast overview, first billed only:
Josette DiCarlo ...


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 (

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Release Date:

26 May 2004 (USA)  »

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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 »


Dolim's lieutenant reports there are seven humans on Degra's ship. However, there were only six. 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.
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Archer's Theme [Enterprise - Music from the Original Television Soundtrack]
Written by Dennis McCarthy
Performed by Dennis McCarthy
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Spectacular Conclusion of a Saga and Promising Beginning of a Season
4 March 2008 | by (Rio de Janeiro, Brazil) – See all my reviews

The Enterprise under the command of T'Pol prepares to destroy Sphere 41 as promised to the Aquatics, while Archer, Reed, Hoshi and three volunteers travel in fast Degra's ship with Humanoids and Arboreals trying to reach the weapon that is protected by only one Reptilian vessel. When Archer comes close to the weapon, Commander Shran with his powerful Andorian ship unexpectedly protects the ship of Degra, allowing the assault team leaded by Archer to be beamed to the interior of the weapon. Meanwhile, the trans-dimensional Sphere Makers protect Sphere 41 with a strong anomaly first and a direct attack to Enterprise later.

"Zero Hour" is a spectacular conclusion of a saga. The story is excellent, with action and dramatic situations; the funny moment is when T'Pol finally reveals her age to Trip. The beginning of Season Four is very intriguing, promising another great Season of this magnificent series. My vote is ten.

Title (Brazil): "Hora Zero" ("Zero Hour")

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