The clock rolls back for Commander John Koenig and Moonbase Alpha personnel
when a spaceship is seen approaching, a voice from its computer signalling that this is Voyager One, with greetings from the
people of Planet Earth.
Voyager One was launched back in 1985, long before the explosion which sent the moon out of orbit.
It has been polluting space ever since because of a tragic miscalculation in its Queller Drive engine, causing a lethal pollution
producing fast neutrons which annihilate matter.
Realisation of this came when Voyager Two was launched and the Queller Drive activated too soon, causing
the deaths of an entire scientific colony on the moon. The danger Moonbase Alpha is now in is made clear when two Eagles
on reconnaisance are caught in violent vibrations. Voyager One must either be destroyed or its Queller Drive deactivated.
Professor Bergman protests that to destroy it would mean loss of all the valuable information it had
gathered during its years in space. If possible, it must be saved and the one man who might be able to do so is scientist
Doctor Ernst Linden of the Experimental Laboratory, who is asked if there are any means of overriding the Voyager One computer's
security codes and gaining access to the command circuit, enabling instructions to be given to shut down the drive.
Although it is not realised at the time, Doctor Linden is most certainly the only man capable of doing
this. He is, in fact, Ernst Queller. He changed his name after the disaster caused by Voyager Two, but can even
he achieve this new assignment?
He is facing a desperate race against time, and the situation takes a grim turn when his assistant,
Jim Haines, whose parents were lost in the early disaster, discovers his real identity and, losing his temper, strikes Doctor
Linden with such force that he is incapacitated. Doctor Russell struggles to revive the injured
man, struggling against the clock. Only minutes remain before Koenig must decide to give the destruct order.
Voyager One is saved at the last moment and is brought to a safe landing on the moon, but there is
even greater drama ahead with the materialisation of a humanoid alien, and the appearance of three alien spaceships.
The strange newcomer introduces himself as Aachon, "Chief Justice of the Worlds of Sidon", seeking vengeance for the millions
whose lives were extinguished when the Queller Drive decimated two of those worlds ...
Episode synopsis taken from Guide Book provided with the Digitally Restored Network/Granada
Ventures Series One Box Set
Copyright Granada Ventures
