Flint is a pint-sized caveman with a mop of spiky hair, he was frozen in a rock shell by Petra Fina ages ago, then found in the 25th century by the twins Tony and Sarah Goodman. Their scientist-uncle at the Bureau of Time and Space revived Flint but could only preserve his father's spirit in a powerful stone ax. The Bureau needs detectives: the evil Dark Lord is trying to capture all the mysterious creatures known as TimeShifters - little beings who possess magical powers. His agent is none other than Petra Fina, ineptly abetted by her henchmen Dino and Might. The trio provides a comic villainy. Flint, Sarah, Tony, and the TimeShifter Getalong travel through space and time to block Petra Fina's various missions.