The story begins with Sid the Sloth (voiced by John Leguizamo) feeling left out as he sees his friends Manny the Mammoth (voiced by Ray Romano) and Ellie (voiced by Queen Latifah) expecting a baby. Feeling like he needs a family of his own, Sid accidentally discovers three dinosaur eggs in an underground cavern and decides to adopt them.
When the eggs hatch, a T-Rex named Momma appears and takes her babies, along with Sid, underground to her hidden world. Manny, Ellie, Diego the Saber-toothed Tiger (voiced by Denis Leary), and the rest of the gang embark on a daring rescue mission to save their friend.
In the dinosaur world, Sid befriends a one-eyed weasel named Buck (voiced by Simon Pegg), who agrees to help him find the babies. Along the way, they encounter various prehistoric creatures and face numerous challenges.
Meanwhile, Manny and Ellie prepare for the arrival of their baby, with Diego feeling conflicted about his role in their expanding family. As they navigate the dangers of the dinosaur world, they must also contend with a new threat: a dangerous dinosaur known as Rudy, who has a personal vendetta against Buck.
Ultimately, the group manages to rescue Sid and the babies, but not without sacrifices. Buck stays behind to face off against Rudy, while the others escape to safety.
In the end, Sid returns to the surface world with the babies, and Manny and Ellie welcome their newborn daughter, Peaches. The group reunites, grateful for their adventure and the bonds they’ve formed along the way.
“Ice Age: Dawn of the Dinosaurs” is a heartwarming tale of friendship, family, and bravery, with plenty of humor and excitement along the way.