Ice Age: Dawn of the Dinosaurs opens with Manny (Ray Romano) and his mate Ellie (Queen Latifah) expecting a baby mammoth. Unfortunately, this makes Sid the sloth (John Leguizamo) and Diego the saber-toothed tiger (Denis Leary) feel left out.

Diego, who worries he’s losing his edge, decides to head out on his own, while Sid adopts three suspiciously large eggs that he’s found through a crack in the ice. The eggs turn out to be dinosaur eggs from a pre-mammalian underworld, and then mama T-Rex comes to rescue her rambunctious little ones.

The gang ventures into a mysterious underground world where they have some close encounters with dinosaurs, battle flora and fauna, run amuck and meet a relentless, one eyed, dino-hunting weasel named Buck.

Also being released this week: Orphan, Nothing Like the Holidays and Whatever Works.