The movie begins with Manny and Ellie, whose daughter Peaches is facing tough time to deal with her friends. Ellie does whatever it takes to support and encourage her daughter, but Manny is entirely opposite. His overprotective nature doesn’t allow Peaches to deal with her problems. Sid’s family comes to the place, to drop off the elderly granny. But unfortunately, they are encountered by troubles when Scrat unknowingly causes continental breakup. Sid, Manny, Diego and Granny are separated from their herd.
They are found in a moving chunk of ice and that’s when these four are trapped into an Adventure. On the other hand, Ellie, peaches and the other people that are left on the land, make their way to the land bridge. Disastrous weather conditions take Sid, Manny, Diego and granny further more away from their place and they are trapped by a group of Pirates on an iceberg.