A laboratory was built on a small tropical island, and its founder Dr. Kirk, in secret from the government, was working on third energy research. But as a result of his experiments, there was a shift in time, which is why ancient dinosaur lizards appeared on the island. At the same time, the government sends a special-purpose detachment to the island to find out all the details of the research. Seeing corpses with traces of terrible claws and torn metal, the commander of the combat squad, the brave girl Regina, enters into an unequal battle with bloodthirsty prehistoric creatures.