Four animals trying to save themselves from the upcoming Ice Age become unlikely heroes. The four reluctantly come together when they have to return a human child to its father while braving the deadly elements. While Scrat the Saber-toothed Squirrel is still trying to find his precious acorn, the misfit trio of Manny the Mammoth, Sid the Sloth and Diego the Sabre-tooth Tiger have settled down in an isolated valley with numerous other animals. However,...

Scrat is still trying to nab the ever-elusive nut and maybe finding true love; Manny and Ellie await the birth of their mini-mammoth; Diego the saber-toothed tiger wonder if he's growing too 'soft' handing with his pals; and Sid the sloth gets into trouble when he creates his own makeshift family by hijacking some dinosaur eggs. On a mission to rescue the hapless Sid, the gang ventures into a mysterious underground world, where they have some very...

Scrat's epic pursuit of the elusive acorn catapults him into the universe where he accidentally sets off a series of cosmic events that transform and threaten the Ice Age World. To save themselves, Sid, Manny, Diego, and the rest of the herd must leave their home and embark on a quest full of comedy and adventure, traveling to exotic new lands and encountering a host of colorful new characters.