Absentminded professor Dr Who (Peter Cushing) has invented Tardis, a Time and Relative Dimension in Space Machine, capable of lugging people to other worlds, in other eras. By accident, the prof, his granddaughters (Jennie Linden and Roberta Tovey) and Linden’s boyfriend (Roy Castle) are ejected from the earth and land on a huge, petrified planet at a time many years back.
The planet is ravaged with radiation from a previous war and the quartet finds themselves in a struggle between the Daleks and the Thals. The Daleks, protected from radiation in an all-metal city and wearing mobile metal cones fitted with flame-guns, are determined to wipe out the gentle Thals.
Cushing plays Dr Who with amiable gravity. Linden is a pretty, routine heroine while Tovey is pleasantly cast as the little girl with scientific knowhow and commonsense. Roy Castle mugs and falls around a little too zestfully as the boyfriend with a fairly good sense of humor.