The Caves of Androzani (TV story)

The Caves of Androzani was the sixth story in season 21 of Doctor Who. It marked Peter Davison's final appearance as the Fifth Doctor and Colin Baker's first appearance as the Sixth at the end of the story.

Synopsis
After landing on the planet Androzani Minor, the Doctor and Peri develop lethal spectrox toxaemia poisoning. As they search for a cure before it is too late, they become enmeshed in a decades-old feud between the disfigured roboticist Sharaz Jek and businessman Morgus.

Jek becomes obsessed with Peri. The situation degenerates when the girl ignores his affections. Between threats from magma beasts and gun runners, it quickly becomes apparent that the Doctor will never find a cure in time to save both his companion and himself.

Part one
The TARDIS lands on Androzani Minor, one of a pair of twin planets in the Sirius star system. The Doctor and Peri decide to explore a set of tracks that lead into some nearby caves.

The Doctor finds a spaceship has arrived, carrying a strange cargo. Deep in the caves, a soldier is killed by a monster. In another part of the caves Peri catches her foot in an unknown sticky substance. The Doctor pulls her free. He gets some on himself, but despite it sting, he is unconcerned. Peri asks why the Doctor wears a stick of celery; it is a safety recaution. He is allergic to certain gases in the praxis range of the spectrum; in their presence, celery turns purple. They discover a hoard of weapons, and hear footsteps. Soldiers capture them and take to their leader, General Chellak. As the two explain they are innocent to Chellak and Major Salateen, there is a call from Trau Morgus, a business conglomerate leader on Androzani Major and CEO of the Sirius Conglomerate. Believing the two to be working for gunrunners Stotz and Krelper, he loses all interest in them and orders their death after seeing that Chellak's "gunrunners" are not his own men over... Hello, its me!

Part two
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