Your favorite prehistoric mammals are back once again for their fifth adventure. Scrat, the famous saber-toothed squirrel is once again in pursuit of that elusive acorn. This time his chase brings him into a UFO buried in the ice, which quickly takes off into outer space. On the plus side, he ends up helping to create our solar system as we know it, on the negative he sets an asteroid on a collusion course with Earth, threatening to destroy all life on the planet.
Meanwhile, woolly mammoth parents Manny and Ellie (Ray Romano and Queen Latifah) are worried about the upcoming marriage of their daughter Peaches (Keke Palmer) to her fiancé, Julian (Adam Devine). They just don’t “get” him and they’re also not thrilled to learn the kids plan to move away after the ceremony.