In this third part, life changes for Manny and his friends. Scrat still continues to hold onto his acorn, but meets up with the love of his life in Scratte. Manny and Ellie has become a couple and are expecting a baby. Diego is sick of being treated like a house-cat and realises that he has become too laid-back. Sid is keen to have a family of his own and steals some dinosaur eggs for the same....

In this third part, life changes for Manny and his friends. Scrat still continues to hold onto his acorn, but meets up with the love of his life in Scratte. Manny and Ellie has become a couple and are expecting a baby. Diego is sick of being treated like a house-cat and realises that he has become too laid-back. Sid is keen to have a family of his own and steals some dinosaur eggs for the same. Watch the hilarious turn of events when Sid finds himself stuck in a strange underground world. Will his friends be able to rescue him?