Martian hostage Guuuurk risks his very sanity by mind-leaping into Troy, a half-insectoid, touted as 'a major breakthrough in Artificial Stupidity'.

The crew of Professor Quanderhorn are about to have their space craft shredded like a savoy cabbage by a massive gravitational wave. Only Martian hostage Guuuurk can save them.

But will the self-declared "miserable coward and despicable turncoat" risk his life and even his very sanity by mind-leaping into Quanderhorn's "son", Troy, a half-insectoid, touted as "a major breakthrough in Artificial Stupidity".

Meanwhile, behind the Post Office in the nearby village, a glowing, throbbing meteorite is exuding a strange influence on the local inhabitants.

When Dr Janussen, Guuuurk, Troy and even Quanderhorn himself appear to be possessed by an alien intelligence, Brian is faced with a perilous dilemma.

And who is that peculiar hot chestnut seller, who bears a startling resemblance to Prime Minister Churchill?