A CG-animated comedy that pits a prehistoric patriarch (Cage) against a forward-thinking outsider (Reynolds). Cage will voice Crug, who cautiously leads his family beyond his comfort zone after an earthquake destroys their home. While attempting to navigate the dangerous and unfamiliar world, Crug butts heads with Reynolds' nomad, who charms Crug's clan - especially his eldest daughter - with his (relatively) modern-minded ways.