Space: 1999: Season 1

Commander John Koenig, the new commander of Moonbase Alpha, leads the investigation of a mysterious disease at the station and uncovers evidence of a far greater looming disaster.

A wandering energy force inhabits the body of Alpha technician Anton Zoref, turning him into an energy absorbing being.

Koenig and Alan travel to an approaching planet, and return, insisting the planet and the Moon must collide. Nobody believes them.

An alien race attacks the Moon with attack ships from Earth.

On the ice world of Ultima Thule the Alphans encounter members of lost earth expedition who have achieved immortality- but at a price!

The Alphans encounter the Voyager space probe that has been wandering the cosmos propelled by the Queller drive- a faulty engine system. Following the probe is a fleet of alien ships from a world devastated by the drive.

The Alphans' joy turns to horror when the first child born on the Alpha matures into a five year old in a matter of hours. This is only a prelude to the arrival of formless alien fugitives- who plan to inhabit Alpha's population.

Discredited Eagle pilot Tony Cellini is beset by recurring nightmares in which he was the only survivor of a disastrous space mission. Now the Moon is approaching the same set of circumstances that Cellini encountered.

The Alphans encounter a miles-long ark from the planet Daria, where the inhabitants have a very distinctive class separation.

The Alphans prepare a forcefield and survival Eagle to escape a black sun that the Moon is approaching,

Contact is made with the planet Piri, where the main computer created an idyllic life that led to extinction of its population through apathy. Now John Koenig must fight to save Alpha as his people fall under the same fate.

While exploring a cavern in an asteroid, the Alphans release Balor, a sadistic alien who has achieved immortality.

Dr. Russell's presumed-dead husband mysteriously reappears on a reconnaissance mission to a nearby planet.

A vessel of alien pacifists, bound for Earth, lands on the moon. They are greeted as friends by all- except Commissioner Simmonds who sees their vessel as way to return home.

While exploring an Earth-type world several Alphans, including Commander Koenig and Dr. Russell, disappear after sighting a strange fog. Shortly afterwards, a race of primitive humans are encountered.

A distortion in time produces two separate moons, with two separate Alphas from different eras.

Alien missiles land on the drifting Moon - and provide it with Earth-like conditions.

The Alphans encounter Delmer Plebus Powells Gwent, a huge spacecraft which defies aerodynamics and is an extension of Gwent's genius and ego.

A mysterious alien probe possesses a technician to access Computer and then kills him, and then takes over Helena.

After Commander Koenig's Eagle crashes, his soul is captured and scrutinized by an alien scientist, due to the fact that humans appear to be his species' missing link.

The wandering Moon approaches a space intelligence which threatens their existence - and they threaten its.

The ghost of a man not yet dead haunts Alpha.

The Moon is halted by a mysterious force from a long-desolate planet.

The Alphans find themselves caught up in a long-running war between two rival planets, Betha and Delta. When a Bethan gunship, which has landed on the moon as a tactical advantage, appears to have been hit its commander Dione seeks sanctuary with the Alphans. Koenig attempts to negotiate a truce but Dione has other ideas...