The prehistoric Croods family live in a particularly dangerous moment in time. Patriarch Grug, his mate Ugga, teenage daughter Eep, son Thunk, and feisty Gran gather food by day and huddle together in a cave at night. When a more evolved caveman named Guy arrives on the scene, Grug is distrustful, but it soon becomes apparent that Guy is correct about the impending destruction of their world.
A young boy and his dog, who happens to have a genius-level IQ, spring into action when their time-machine is stolen and moments in history begin to be changed.
A hunt for a lost sheep turns into a competition between Hiccup and friends as they compete to become the first Dragon Racing champion of Berk.
