Eighty years in the future, what was once thought impossible is now reality - the world's first time machine has been created! Now mankind can explore the distant past and witness the far future with their own eyes. There's only one it's malfunctioning. And when an unsuccessful test run leaves the time machine stranded eighty years beforehand, its creators rush to find a way to retrieve the vehicle before someone stumbles upon it. Unfortunately, they're too late...
In the Present Day, teenagers Mikey Cook, Alice Cook, Carlos Rivera, and Jazz Glasmith stumble across the time machine, and accidentally find themselves on an unwilling joyride through the wilds of prehistory. As the reluctant time travelers journey across the timestream, they find themselves facing primeval beasts, historical dictators, natural disasters, and madmen from the future, all on an epic quest just to get home. However, in all the chaos, it soon becomes apparent that a third party in working in their midst, one with a much more malevolent purpose.