The movie "The Croods" is a 3D comedy cartoon about the adventure travel of a primitive family. The primitive man Gulus family of six lives under the protection of his father Gua Ge. He robs ostrich eggs for food every day, avoids the pursuit of wild beasts, listens to his father narrating the same story every night, and lives an unchanging life in the cave. The eldest daughter Xiao Yi is a curious girl who is completely opposite to her father. She is not satisfied with staying in this small cave all her life and wants to pursue the novel world outside the cave.
Unexpectedly, the end of the world suddenly came, the cave was destroyed, and the family was forced to leave their home and start a new journey. Leaving the cave where they had lived "all their lives", what appeared in front of them was a brand-new, gorgeous but dangerous new world, full of man-eating flowers and plants and strange birds and beasts that they could not name. The family encountered An unprecedented crisis. During the journey, they also met "Gai", a nomadic tribesman. He had extraordinary creativity and innovative ideas, and helped the Gulu family escape many difficulties. He also invented many "high-tech" products along the way. And let them know that life requires "brains", walking requires "shoes" and so on. The group of people embarked on a hilarious and thrilling journey in the film.