A group of old friends are about to start a new journey. While the mammoth Manny is enjoying the joy of becoming a father, the saber-toothed tiger Diego is saddened by his gradual aging. At this time, the sloth Sid finds three dinosaur eggs and is overwhelmed with "motherly love". He wants to be the mother of the three little Tyrannosaurus Rex, but is kidnapped by the real mother of the little dinosaurs, the Tyrannosaurus Rex. In order to find companions, a group of lovely animal friends enter the "Jurassic Park" hidden under the Ice Age. In this magical place, what new friends will they meet and what dangers will they encounter? All the "Ice Age fans" are full of expectations. As the first large-scale 3D animated film released by 20th Century Fox, the production cost of this film reached 120 million US dollars, almost twice that of "Ice Age 1".