At its core, "The Croods" revolves around the eponymous family, consisting of Grug (Nicolas Cage), a overprotective and traditional father; Ugga (Cloris Leachman), a loving and supportive mother; and their three children, Eep (Emma Stone), Thunk (Clark Duke), and Gran (Randy Thom). The family's sheltered life in their cave is disrupted when Grug, in an attempt to protect them, inadvertently leads them out into the open, where they encounter a new and unfamiliar world.