Space: 1999

An explosion disintegrates the moon's dark side and hurls it, along with 311 occupants, out of Earth's orbit and into space.

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

After destroying an asteroid on a collision course with the moon, an even larger obstacle appears, an entire planet; on a recon mission, John Koenig encounters an inhabitant who convinces him, on the basis of faith, that the moon and the planet must collide; but no one else supports Koenig's stand.

Moonbase Alpha is attacked and devastated by warships from a nearby planet; with half of its population dead, Alpha can no longer survive. Commander Koenig and Dr. Russell go to the alien world to plead for the survivors, but the inhabitants wish no one to disturb their serene existence.

Commander Koenig and his colleagues speed through space and time into a world of ice; once there, they encounter people who appear to be former inhabitants of earth stranded there.

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.