Ian Thorpe, Ernie Dingo and Julia Zemiro are about to conduct a huge experiment. They become one of the first in Australia to use DNA to travel back in time. They want to go back to their ancestors who lived 200,000 years earlier. They end up in Tanzania, among other places, and visit Israel and India. They also see how their ancestors tamed horses in Kyrgyzstan and visit the beautiful island of Sardinia.