After the events of "Ice Age: The Meltdown", life begins to change for
Manny and his friends: Scrat is still on the hunt to hold onto his
beloved acorn, while finding a possible romance in a female
sabre-toothed squirrel named Scratte. Manny and Ellie, having since
become an item, are expecting a baby, which leaves Manny anxious to
ensure that everything is perfect for when his baby arrives. Diego is
fed up with being treated like a house-cat and ponders the notion that
he is becoming too laid-back. Sid begins to wish for a family of his
own, and so steals some dinosaur eggs which leads to Sid ending up in a
strange underground world where his herd must rescue him, while dodging
dinosaurs and facing danger left and right, and meeting up with a
one-eyed weasel known as Buck who hunts dinosaurs intently.
i like this movie is the bast movie