Summary

With the impending ice age almost upon them, a mismatched trio of prehistoric critters -- Manny the woolly mammoth (Ray Romano), Diego the saber-toothed tiger (Denis Leary) and Sid the giant sloth (John Leguizamo) -- find an orphaned infant and decide to return it to its human parents. Along the way, the unlikely allies become friends. But when enemies attack, their quest takes on far nobler aims.