Season Three Episode Guide

The Xindi

Episode #: 301
Air Date: 09.10.03
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After weeks searching the Delphic Expanse, the crew is led to a mining colony where they hope to find a Xindi worker, who can lead them to the mysterious species' homeworld.


Episode #: 302
Air Date: 09.17.03
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Enterprise is ransacked by the Osaarians, a group of space pirates who prey on ships that fall victim to the Expanse's spacial anomalies.


Episode #: 303
Air Date: 09.24.03
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Archer and an away team are infected by a mutagenic virus, which transforms them into the extinct species that once inhabited the planet.


Episode #: 304
Air Date: 10.01.03
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Captain Archer takes an exotic slave woman on board, only to discover she is using her unusual abilities in the service of the Xindi.


Episode #: 305
Air Date: 10.08.03
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The crew receives a distress call from a Vulcan ship lost in the Delphic Expanse, only to discover that its crew has been driven insane. T'Pol begins to suffer the same effects as her old crew.


Episode #: 306
Air Date: 10.15.03
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Hoshi is lured to a deserted planet by a powerful telepath, who promises to help them locate the Xindi. Enterprise investigates another anomaly-creating sphere.

The Shipment

Episode #: 307
Air Date: 10.29.03
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Captain Archer must decide whether or not to trust Earth's greatest enemy when the crew discovers a Xindi colony that is manufacturing a vital component of the Xindi weapon.


Episode #: 308
Air Date: 11.05.03
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An encounter with an anomaly leaves Captain Archer unable to form new, long-term memories. He awakens to discover that 12 years have passed, Earth has been destroyed by the Xindi, and a small colony of humans is fighting for survival.

North Star

Episode #: 309
Air Date: 11.12.03
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Enterprise discovers a colony of humans, taken from Earth when the West was young, living in the Expanse. Captain Archer discovers that the humans have overthrown their former captors.


Episode #: 310
Air Date: 11.19.03
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An accident in engineering leaves Trip in a coma. In an attempt to save his life, Phlox creates a mimetic symbiote -- a rapidly-aging clone of Trip who will lives out his lifespan on board the ship in only 15 days.

Carpenter Street

Episode #: 311
Air Date: 11.26.03
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Daniels returns to Enterprise to inform Archer that three Xindi Reptilians have been discovered on Earth in the year 2004. Archer and T'Pol are sent back in time to stop a plot to develop a second weapon to wipe out the human race.

Chosen Realm

Episode #: 312
Air Date: 01.14.04
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Enterprise is hijacked by a group of religious zealots who worship the sphere builders, and who plan to use the ship to destroy their ideological enemies.

Proving Ground

Episode #: 313
Air Date: 01.21.04
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An Andorian ship under the command of Shran arrives in the Expanse with promises of helping the crew find the Xindi weapon. But the Andorians may have their own motives.


Episode #: 314
Air Date: 02.04.04
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After capturing Degra, the engineer behind the development of the Xindi weapon, the crew engages in an elaborate hoax to convince him to reveal its location.


Episode #: 315
Air Date: 02.11.04
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Tensions on Enterprise run high as the ship travels to Azati Prime, and Reed's relationship with Major Hayes comes to a head. When the ship finds an alien inside an expanding anomaly, Archer makes a frightening discovery about the sphere builders.

Doctor's Orders

Episode #: 316
Air Date: 02.18.04
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The human crew must be placed into a comatose state to survive a trip through a deadly region of space, with only Phlox, T'Pol and Porthos left to man the ship.


Episode #: 317
Air Date: 02.25.04
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The Enterprise crew finds a crashed Xindi Insectoid ship, where the only survivors are the crew's soon-to-hatch offspring. The crew suspects alien influence when Archer puts the ship and the mission at risk to save them.

Azati Prime

Episode #: 318
Air Date: 03.03.04
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The crew finally finds the weapon that will soon be launched to destroy Earth, and Captain Archer prepares to sacrifice himself to destroy it -- only to be pulled into the future by Daniels and told that he must survive and make peace with the Xindi.


Episode #: 319
Air Date: 04.21.04
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As the crew tries to recover from a devastating battle with the Xindi, Captain Archer must decide whether or not to cross an ethical line for the mission to have any chance to succeed.

The Forgotten

Episode #: 320
Air Date: 04.28.04
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While the crew continues to repair Enterprise, Captain Archer invites two high-ranking Xindi onto the ship to show them evidence that they are being manipulated into destroying Earth. Trip struggles to deal with the death of his loved-ones.


Episode #: 321
Air Date: 05.05.04
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On their way to a vital meeting with Degra, the crew encounters a duplicate Enterprise populated by their own descendants -- who warn them that the subspace corridor ahead will throw them more than 100 years into the past.

The Council

Episode #: 322
Air Date: 05.12.04
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Archer is brought before the Xindi Council to present evidence they are being manipulated by the sphere builders, whom they revere nearly as gods. A team from Enterprise infiltrates one of the spheres to try and access information.


Episode #: 323
Air Date: 05.19.04
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The crew and their new Xindi allies race to stop the Reptilians and Insectoids from unleashing the weapon on Earth. Major Hayes leads a unit to rescue Hoshi, who the Reptilians are forcing decrypt the weapon's launch codes.

Zero Hour

Episode #: 324
Air Date: 05.26.04
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Archer makes his last stand against the Reptilians as the Xindi weapon hurtles towards Earth. T'Pol and Tucker lead the crew on a mission to destroy a key sphere in the hopes of breaking the Guardians' hold on the Expanse.