The Doctor and company drop in on the planet Atrios, whose inhabitants are in an interplanetary war with their twin planet Zeos. Although Astra, Princess of Atrios, wishes for peace, the Marshal, her commander of the military, does not share her views. So, while the TARDIS is in orbit around the planet, the Marshal targets the Doctor for destruction. Written by
Did You Know?
In the original script, both Atrios and Zeos were populated. Astra (at that point called "Reina", a name later changed to avoid confusion with Prince Reynart from The Androids Of Tara) was an astrophysicist who had discovered the Shadow's planet lying between the two warring worlds. The conflict had arisen because Atrios and Zeos blamed each other for a catastrophic shift in their orbits; they were being egged on by the Shadow, known as "the Presence" on Atrios and "the Voice" on Zeos. The Doctor was forced to use the makeshift Key To Time to temporally freeze both planets' armies. The Shadow's own shadow turned out to be the sixth segment of the Key To Time. His plan was to use the powers of the Key to pit one half of the universe in war against the other half. The Doctor stopped the Shadow by unfreezing the Atrian and Zeon armies and giving each the coordinates of the Shadow's "Castle of Evil". See more
Where's your joy in life? Where's your optimism?
It opted out.
Optimism: belief that everything will work out well. Irrational, bordering on insane.