Randy Oglesby

Trip becomes pregnant after being dispatched to an alien ship where he has a close encounter with one of the ship's engineers.

The son of devout Jehovah's Witnesses is accused of killing his teacher after being caught fleeing the scene of her murder; the Democratic National Committee hires the team to investigate a second case.

While on their way to the Xindi council, Archer and crew encounter an Enterprise ship from the future that warns them about an unstable wormhole.

T'Pol and Reed lead a team on a mission to obtain information about the network of spheres inhabiting the Expanse; Archer and Hoshi stand before the Xindi council; the Sphere Builders reveal themselves to members of the Xindi council.

Archer attempts to convince Xindi weapon-designer, Degra, that humanity is not his enemy; Trip tries to come to terms with his sister's death; T'Pol confronts her substance addiction.

The crew penetrates the Delphic Expanse in search of an alien race threatening to exterminate humanity.