Captain Archer and his crew set out to gain information about the mysterious and antagonistic Xindi race.

The NX-01 gets closer to a showdown with the Xindi when Captain Archer takes on an enigmatic passenger: a beautiful slave named Rajiin.

An Andorian ship led by Commander Shran arrives in the Delphic Expanse to help Enterprise hone in on the Xindi super-weapon.

Archer sets out on a suicide mission to destroy the Xindi superweapon as Enterprise faces a brutal attack.

While dissension among Xindi ranks festers, Enterprise tries to recover from a devastating attack.

Two high-ranking Xindi offer to stop the launch of their superweapon if Archer can prove they've been manipulated. Meanwhile, the crew mourns their lost mates.

An attempt to use a Xindi subspace corridor leads the Enterprise crew to a bizarre encounter with their own descendants.

Archer and Hoshi stand before the Xindi Council as T'Pol and Reed lead a team into the heart of a Sphere.

With help from Xindi allies, the Enterprise crew attempts to stop the arming of the Weapon aimed toward Earth.

Archer puts his life on the line in a risky gambit to intercept the Xindi superweapon and disarm it from within.