Mel the cat had always wanted to fly, and Geoff the cat had always
wanted to understand how the universe worked. Their wishes are both
granted one evening when two space creatures, Grok and Klek, make an
unauthorised visit to Planet Earth. But achieving their dream only opens
the cats' eyes to the real world. They see the pollution, the poison and
the cruelty of the men who seem to run things. Mel and Geoff think they
can make things better. But with such huge problems, what difference can
two small cats make?