Through a series of events, the cavemen Flint and his father were turned into fossils in prehistoric times - only to be found in the 25th century and brought back to life. Flint becomes part of the Time Bureau, an organization tasked with finding time shifters that have been scattered throughout the ages by the evil Dark Lord. Alongside Tony, Sarah, and his still-partially-fossilized father in the shape of a stone axe, Flint will travel through time and find the time shifters before Petrafina - the Dark Lord's minion - can get to them first! From Christopher Columbus to ancient samurai, Flint and his friends will meet a variety of famous people and have plenty of fun along the way.