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After finding their way out of a creature's stomach, the Croods head back to Ahhh! Valley to stop the Broods from taking over their homeland.
While Grug has his first day as leader of Ahhh! Valley, a new family pet makes Sandy jealous.
When Grug becomes the first leader of Ahhh! Valley, he must help solve the residents' many problems, including keeping out the food-stealing Broods.
