A group of scientists, a documentary wildlife film maker, medical personnel, and a former military officer, travel back to the paleolithic using an experimental time machine. They must face the dangers of a hostile environment, predatory beasts, giant mammoths, and stone age warriors, as well as a group of vicious modern killers who follow them into the past in order to steal the secrets of time travel. Only their raw courage, survival skills, and scientific minds stand between them and extinction!
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