On a class excursion to a cave with stone age paintings the clumsy Rex gets lost. A mysterious crystal opens a gateway in time and sets him back to the stone ages, where he meets a group of prehistoric fellows and the gorgeous Eba. While teaching her English and doing some pseudo-research on her fellows, his main goal is to get her sleeping with him. However the curiosity of the clan chief disturbs his attempts.

• Crown International Pictures
• Daniel Roebuck
• Cynthia Thompson
• Darren Young
• Saba Moor-Doucette
• Jeff Chayette
• Charles Mitchell
• Cynthia Rullo
• Tom Hamil