A Sound Of Thunder -

"A Sound of Thunder" is about a game hunter (Burns) who goes on a time-traveling safari owned and operated by Kingsley"s character to hunt dinosaurs in the prehistoric era. When he kills a butterfly, he unknowingly sets off a chain reaction that will erase humanity from existence. A team of experts must return back in time and replace the butterfly. McCormack is the inventor of the time-traveling computer.

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