Suspected radiation from nuclear waste containers threatens a deep space probe from Earth's space research center on the moon. It is a prologue to disaster and mankind's most fantastic adventure.
Dr. Russell's long-lost husband, Lee, appears on an Eagle returning from an Earth-like planet. He warns that the planet is not for them and that a power greater than they can understand will destroy them if they go there. Koenig must decide whether to listen to Lee's warning or evacuate the Moon before it's too late.
The moon base personnel find themselves on a collision course with an asteroid. However, the asteroid is deflected by a greater threat: an all-devouring black sun that will destroy Alpha unless things changes rapidly.
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.
People originating from a dying planet land on the moon and tell the Alphans that their spacecraft has been programmed to take them to Earth. With room on their ship to take one of the base's personnel, Koenig faces a dramatic decision..
The people of Alpha are faced with a very strange phenomenon as they find themselves copied and encounter their future selves on Earth. The unspoken question is how long will this last and what does it mean for the Alphans..?
Commander Koenig finds himself in another world and another time. It is a world of light and beauty. He has to choose between life back again among his companions on the moon and the love of a beautiful girl. Love is the only weapon he can use...
A mysterious power from an alien planet takes control of Alpha with the intent of luring its inhabitants to a paradise of eternal peace but also a place of living death. Commander Koenig is the only one capable of saving the Alphans from a terrible fate.
A terrifying force from Outer Space brings freezing death to Alpha personnel. One man has been chosen as the instrument of destruction.
The first baby is born on the moon and brings great joy for the first time in a long while to theAlphans. However, terrifying events follow with an outer space battle between spaceships that could decide the fates of hundreds.
When the moon approaches a possibly habitable planet, probes launched from the planet miraculously give the moon full gravity and atmosphere. However, the new gifts also have a dark side, causing Eagle crashes and making Paul delusional.
Grim danger emerges from the past as Alpha is threatened with destruction from an unmanned spacecraft. The ship was sent up from Earth many years earlier with tragedy in its wake. If this threat wasn't enough, victims from outer space threaten revenge.
Commander Koenig encounter a woman named Arra, who is older than Earth itself but breathtakingly beautiful as well. Is it destiny that the two met or something more? It all happens when the Moon is on a collision course with a planet many times its size.
Commander Koenig and his colleagues speed through space and time into a chilling world of ice. However, once there, they encounter people who appear to be former inhabitants of earth stranded there when their expedition crashed on the planet they call Ultima Thule.
The residents of Alpha take a trip through time as the moon passes through a time warp and the Alphans meet themselves as caveman from the Stone Age of 40,000 years ago.
A terrifying power is unknowingly freed by the Alphans when they free a killer that seemingly can't be killed. How can Koenig and the others stop a psychopath that is virtually immortal?
Moonbase Alpha finds itself at war with an unnamed planet. The outcome is disastrous. Everything is wrecked. But can there be a future for the survivors on the aggressor planet?
In a solar system where two hostile planets are always on opposite sides of their sun, one planet uses the wandering Moon as a gun platform, putting Alpha in the middle of a never-ending war.
The Alphans find themselves encountering the ghost of a man who is still alive with horror and death being the result. Can Koenig stop the apparation or is the moonbase doomed?
The Alphans encounter an intangible mass as the moon heads though space and it could spell disaster for them. The energy field seems to have a strange and frightening power that Koenig and the others try to figure out before it's too late.
The people of moonbase Alpha encounter something that is unlike anything they have encountered before:a machine that is alive and sentinent.
A call for help reaches Moonbase Alpha from the survivors of a dying world. The world is one that has been flying through space for 900 years with contrasting inhabitants. Some have never changed while others have reverted to barbarism. Does this new planet represent hope to the Alphans or something potentially dangerous?
The Alphans encounter an eerie graveyard of lost spaceships that may be the result of encounters with a deadly monster in outer space. Is the threat real or imagined? Koenig must determine the truth before it may be too late....
In distant outer space, the Moon's random careening comes to a sudden halt as the Alphans discover what looks to be origins of life on Earth itself. Could this discovery spell the end of the Moon or the beginning of a new life for the Alphans?
Alpha needs titanium to repair its life support system and traces of it are located on the planet Psychon that is near to the moon. However, Koenig and the others soon learn of a sinister mining operation operating beneath Psychon's surface and what it may spell for the Alphans.
A large group of objects suddenly appear in orbit around the moon and when one is retrieved by an Eagle sent to investigate, it found to contain the cryogenically frozen body of a young man. The man pleads for the Alphans to help revive his frozen colleagues though his pleas may not reveal all of his future plans.
An alien woman named Zamera suddenly appears on the moon and demands that two Alphans accompany her back to her home planet of Vega. Dr. Russell and Tony go with her to Vega and discover a society with two distinct classes that have different plans for the future in mind.
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!
Moonbase Alpha learns that there is technology now on Earth that is capable of sending them home. However, the trip home hits an unexpected bump and Koenig, Carter and Dr. Russell find themselves in a strange place and time as a result.
An energetic and flamboyant trader known as the Taybor arrives on the moon to trade with the Alphans. Commander Koenig is interested in a drive the Taybor has that could help his people get back to Earth but is unhappy when he discovers that the Taybor want a high price in trade - Maya!
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.
A survey below the moon's surface reveals a stasis chamber that the Alphans were unaware of. The chamber is found to contain two aliens, a man and a boy, in suspended animation. Once revived, the man identifies himself as Petrec and the boy Etrec and says they are emissaries from the planet Archanon. As Etrec is befriended, Helen discovers the two have a shared genetic disorder that may spell doom for everyone at the moonbase.
Koenig leads a team to investigate a ship which resembles one launched from Earth years earlier that has landed on the moon. The ship is found deserted save for a mobile computer named Brian, who soon leads the Alphans into a dangerous situation.
The people of Moonbase Alpha are suprised by the sudden appearance in their midst of a man named Magus, who claims he was responsible for the moon's ceasing to move so he could speak to the Alphans. Magus says he has created a planet that is the equivalent of a second Eden and transports Koenig, Tony, Maya and Dr. Russell there for them to see the world. However, the four quickly learn the real truth behind the sights that they see and the peril they face.
Alpha is bombarded by strong electrical waves that seem to be emanating from a nearby planet. After investigation, Koenig determines that the best course of action is to convince the spherical residents of one of the moons that orbit the planet that Alpha poses no threat to them.
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.
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.
An Eagle sent to probe a cloud responsible for a mysterious illness infecting most of Alpha returns with a menacing creature determined to take the life support core of Alpha. Can Tony stop the menace before it's too late?
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.
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.
A faster-than-light Super Swift ship arrives at Alpha, bringing friends and relatives and raising hopes that they will all be able to go home soon. But Koenig, recuperating from a brain injury, sees only hideous aliens in the visitors.
Koenig desperately tries to convince the others that they're only seeing illusions and that the aliens are actually after energy that they can only get by destroying Alpha.
A strange space cloud appears in the vicinty of Alpha around the same time as a technician dies under mysterious circumstances. Before long, Koenig is locked in a battle of wills with a woman whose latent mental abilities have surfaced presumably due to the cloud's proximity.
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.
An alien space ship approaches Alpha asking for emergency assistance upon contact. They discover that they are a prison transport ship carrying a prisoner called Dorzak to life in prison on an asteroid. However, Maya knew Dorzak and claims he is a poet and not a mass murderer and releases him.
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 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 Dorcons are a race of conquerors who can live forever by transplantation of a Psychon brain stem. Maya, the last known Psychon, is traced to Moonbase Alpha by the Dorcons, who threaten the Alphans with destruction unless Maya is handed over.
The seven minute clip features only Zienia Merton reprising her role as Sandra Benes delivering a final message to Earth as the only crew member left while a massive exodus to a habitable planet takes place with the rest of the crew. This basically gave the series the finality it never had in its initial run.
