With the impending ice age almost upon them, a mismatched trio of prehistoric critters find an orphaned human infant in this smash animated hit. Together, Manny the woolly mammoth (Ray Romano), Diego the saber-toothed tiger (Denis Leary) and Sid the giant sloth (John Leguizamo) become reluctant heroes and embark on an epic, hilarious journey to reunite the baby with his parents.