The story revolves around sub-zero heroes: a woolly mammoth, a saber-toothed tiger, a sloth and a prehistoric combination of a squirrel and rat, known as Scrat.
With the impending ice age almost upon them, a mismatched trio of prehistoric critters – Manny the woolly mammoth, Diego the saber-toothed tiger and Sid the giant sloth – 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.
Ice Age is a 2002 American computer-animated comedy film directed by Chris Wedge and co-directed by Carlos Saldanha from a story by Michael J. Wilson. Produced by Blue Sky Studios as its first feature film, it was released by 20th Century Fox on March 15, 2002. The film features the voices of Ray Romano, John Leguizamo, and Denis Leary. Set during the days of the ice age, the film centers around three main characters Manny (Romano), a no-nonsense woolly mammoth; Sid (Leguizamo), a loudmouthed ground sloth; and Diego (Leary), a sardonic saber-tooth tiger—who come across a human baby and work together to return it to its tribe. Additionally, the film occasionally follows Scrat, a speechless "saber-toothed squirrel" voiced by Wedge, who is perpetually searching for a place in the ground to bury his acorn.
Ice Age was originally intended as a 2D animated film developed by Fox Animation Studios, but eventually became the first full-length animated film for the newly-reformed Blue Sky, which had been reshaped from a VFX house to a computer animation studio. Focus shifted from making an action-adventure drama film to a more comedy-oriented one, and several writers, such as Michael Berg and Peter Ackerman, were brought on to bring out a wittier tone.