"The next case," the court officer bellowed out, "the criminal masterminds known as 'The Doctor' and 'Romana' vs. the people of the planet of Paradise-1."
The planet of Paradise-1 was a tropical heaven. What makes the planet all the more interesting was that there are scores of alien races, often inimical to each other, that when they pay a visit just can't be bothered with each other. There is, of course, the occasional exception; unsurprisingly one such incident coincides with the Doctor, Romana and K-9 arriving for a holiday after the kurfuffle on Argolis
Framed for murder, the time travellers are railroaded straight to Paradise-2, a hell-hole where they are condemned to imprisonment in virtual realities built from their own fantasies that will become their own living nightmare for the rest of eternity while their mindless bodies are left to rot.
There's something nasty crawling under the skin of Paradise, but will the Doctor and Romana be able to turn their back on their marriage and their child to do anything about it?