is the alternate title for the moderately budgeted . The scene is a research center, where experimental time-travel is in its formative stages. The center's directors are informed that, if they don't prove the efficacy of their research within 24 hours, they will lose their funding. A journey through time, commandered by scientist Lyle Waggoner is rapidly set in motion. Zapping 5000 years into the future, the time travellers confront a hostile band of extraterrestrials, who intend to conquer the world. The problem: how to get back to the "present" to avoid such a catastrophe (their first return attempt lands the travellers smack dab in the middle of the stone age). The all-former-star cast includes Scott Brady, Gigi Perreau and Anthony Eisley. director David L. Hewitt had been here before in his (1964).