Trapped in the Cambrian period (541 million years ago) by an earthquake, the X-VENTURE Xplorers find themselves in a fix - having to fix for their temperamental time machine! Rain, Sean and Stone are now faced with the challenge of finding electricity in an era where human have yet to exist! And to make matters worse, the locals don't take kindly to them either! Witness all the wonders of our world's past with your friends, the PREHISTORIC PIONEERS!