Two years after the discovery of "Sue," the largest and most complete Tyrannosaurus Rex skeleton found to date, government officials seize the remains and claim that "Sue" was stolen from federal land.

A group of fossil hunters uncover not only the bones of a 77 million year old dinosaur, but its mummified and fossilized 'body'. After excavating the duckbill nicknamed 'Leonardo', scientists begin a battery of tests including a radiographic autopsy. Journey along with a team of paleontology experts as they make several astonishing discoveries including the creature's last meal and never-before-seen internal organs.