In 2070 A.D., John Gribardsun assembles a team of scientists to travel back in time to 12,000 B.C. Their mission is Project Chronos: to learn about the ancient Magdalenian culture. After emerging from their timeship, the other members of the crew begin to suspect something out of the ordinary about their enigmatic gray-eyed leader. As he adapts to their primitive surroundings with remarkable ease, it is almost as if he belongs…