The moon itself somehow becomes the prisoner of an alien planet as Alpha is gripped in a ring of light. At the same time, Dr. Russell becomes an involuntary informer with death as her only alternative.

The episode was rated 6.82 from 33 votes.

Alpha' s water system needs a rare mineral named Milgonite and scanners detect quantities of it on a barren planet the moon is passing. When Koenig leads a party to the planet to obtain the mineral, the Alphans discover that the rock structures on the planet are sentient and have a need for water, which they intend to take from the Alphans themselves!

The episode was rated 6.79 from 29 votes.

The Alphans hopes of resettling on a planet of their own seem to be within reach when a seemingly uninhabited and life sustaining planet is located. But when they learn that the planet is already inhabited by a powerful immortal being, it quickly becomes a fight for survival where only the victor may escape alive.

The episode was rated 6.74 from 27 votes.

Koenig journeys alone to an asteroid on a collision course with the moon but returns sounding like a different man. Subsequently, Koenig orders a bizarre plan to be carried out and only Maya and a few others can stop him and find out what is truly going on.

The episode was rated 6.72 from 25 votes.

Maya contracts a strange illness that causes her to hallucinate and go on a wild rampage through the corridors of Alpha. Meanwhile, Koenig and Tony's investigation of a derelict spacecraft hits an unexpected bump and the two must concoct a desperate plan if they are ever to see Alpha again.

The episode was rated 6.71 from 31 votes.

Koenig, Maya and Tony visit the planet Luton, a pluce lush in plants and vegetation. However, Maya and Koenig quickly find themselves in trouble over their innocent actions of picking flowers and eating a few berries. The two are forced into a dangerous trial by combat by the planet's rulers to prove their innocence with a possible outcome of death.

The episode was rated 6.71 from 31 votes.

An engineer working below the moon's surface in search of a rare mineral needed for Alpha's life support system and the building of an artificial heart for his wife starts to become unbalanced from the stress and pressure weighing on him. To that end, he undertakes a course of action that endangers many even as Koenig wonders if his rantings might be actually coming true.

The episode was rated 6.57 from 30 votes.

Koenig takes a landing party with him to explore the nearby planet Sunim. Once there, a party member's hallucinations quickly create complications for all of Alpha as they are faced with a decision that could decide the fate of a race in another universe.

The episode was rated 6.46 from 28 votes.

An Alpha crewman starts believing he's psychic and can sense a habitable planet nearby, leading his team to mutiny and endangering Alpha when Koenig finds that the Moon and the planet are actually on a collision course.

The episode was rated 6.39 from 28 votes.

Koenig explores a planet that was devastated by some sort of weapon that killed all the inhabitants but did not affect the plants or destroy any buildings. He discovers that there is life on one of the moons and when he goes to investigate, he crash lands, and realizes that the moon is a prison and the inmates don't know they have no one to go home to.

The episode was rated 6.29 from 28 votes.