Third instalment of the CGI-animated comedy adventure franchise. As Manny (voice of Ray Romano) and Ellie (Queen Latifah) anxiously await the birth of their mini-mammoth, Diego the sabre-toothed tiger (Denis Leary) wonders if he's growing too laid-back living the life of a pampered house cat. Meanwhile, Sid the sloth (John Leguizamo) gets into trouble when he creates his own makeshift family by hijacking some unusually large eggs and inadvertently discovers a mysterious underground world where dinosaurs still roam. The voice cast also includes Simon Pegg, Jane Lynch and Bill Hader.