Sid the sloth discovers three eggs - but when they hatch into dinosaurs, he struggles to keep them under control. The creatures' mother comes looking for her offspring and takes them and Sid to an underground world where the giant reptiles never became extinct. Sid's friends, aided by a crazed one-eyed weasel, head for this strange new land to rescue him. Animated adventure sequel, with the voices of John Leguizamo, Denis Leary, Ray Romano and Simon Pegg