Six weeks into the Delphic Expanse, Captain Archer and his crew learn of a Xindi working at a mining colony, and set out to track him down and gain information about the mysterious antagonistic race.
Enterprise starts experiencing the effects of spatial distortions pervading the Delphic Expanse, and falls victim to predatory aliens taking advantage of the crippling conditions.
The crew investigates an abandoned Xindi vessel on a jungle planet.
Captain Archer allows a slave girl named Rajiin to come aboard, who isnít what she says she is.
While responding to a distress signal, Archer and his away team are attacked by insane zombie-like Vulcans.
A telepath contacts Sato to help Enterprise to find the Xindi... for a price.
Archer, Reed and Major Hayes infiltrate a Xindi-Sloth industrial colony to learn more about the weapon of mass destruction that will be used against Earth.
A spatial distortion leaves Archer unable to form any new long-term memories.
Enterprise discovers a settlement of humans living a 19th-century Western lifestyle on a Delphic Expanse planet, so Archer and crew set out to learn how they got there.
After an accident in Engineering leaves Trip mortally injured, Dr. Phlox attempts to save the chief engineer by creating a clone of him to harvest neural tissue from a clone, made from one of Phlox's exotic creatures.
Ex-crewman Daniels, a temporal agent from the future, appears on Enterprise and sends Archer and T'Pol back in time to 2004 Earth, to learn why three Xindi-Reptilians have been detected in the timeline where they're not supposed to be.
A group of religious zealots hijack Enterprise intending to use it against the enemies of their faith.
An Andorian ship led by Commander Shran arrives in the Delphic Expanse to help Enterprise hone in on the Xindi superweapon.
Archer finds himself face-to-face with Degra, the designer of the Xindi superweapon, and tries to trick him into revealing its location.
Enterprise rescues a dying alien from a colossal spatial anomaly, and he refuses to reveal why he was there. Meanwhile, tensions between Reed and Hayes heat up as new training drills begin.
The fate of Enterprise is in Dr. Phlox's hands as the rest of the crew must be induced into a coma in order to survive a trans-dimensional disturbance.
Archer goes to the extremes to save a colony of Xindi-Reptilians.
Archer confronts the Xindi, while Enterprise is severely damaged by attacking Xindi ships.
Enterprise recovers from being damaged, while the Xindi Council begins to break apart.
Two Xindi officers offer to stop the deployment of the super-weapon if Archer can provide proof that they have been deceived.
While using the Xindi corridor system, Enterprise encounters another Enterprise.
Archer confronts the Xindi Council.
With help from some Xindi fractions, the Enterprise crew try to stop the deployment of the Xindi super-weapon.
With only minutes left, Archer must stop the deployment of the Xindi super-weapons.