Just as he goes over the falls, the trio swoops in on a commandeered Pteranodon only to been chased by a flock of Quetzalcoatlus on the way and saves his life. Manny doubles back to protect her and Diego fends off further attacks, while Buck takes Crash and Eddie ahead to rescue Sid. As the herd moves toward Lava Falls, Ellie goes into labor and a Guanlong pack strikes, causing a rock slide that separates her from Manny and Diego. Sid is knocked onto a loose rock slab that is floating on a river of lava and about to plummet over the falls. The next day, however, Sid is separated from the family and attacked by Rudy. In the meantime, Sid and Momma try to outdo each other in feeding the offspring he loses this contest, but is soon welcomed into the family regardless.
He agrees to lead the herd through the jungles perils to Lava Falls, where Momma has taken Sid and her babies. Buck has been living in this jungle for some time and is chasing Rudy (a huge albino Baryonyx), intending to avenge the eye he lost to it. Here, an Ankylosaurus threatens the herd despite Diegos efforts to fend it off they are saved from a further crowd of angry reptiles by an insane, one-eyed weasel named Buckminster, or Buck (Simon Pegg). Manny, Ellie, Crash, and Eddie (Seann William Scott, Josh Peck) follow as well and discover that the icy cavern leads to a vast jungle populated by dinosaurs thought to be extinct. A female Tyrannosaurus, Momma, whose eggs Sid stole, soon returns and carries both Sid and her young underground, with Diego in pursuit. Although Sid tries his best to raise the three dinosaurs, their rambunctious behavior scares away all the other animals young and ruins a playground Manny built for Ellies baby. Manny tells him to put them back, but Sid instead looks after the eggs, which hatch into baby Tyrannosaurus the next morning. Sid (John Leguizamo) grows jealous of Manny and Ellie and adopts three apparently abandoned eggs that he finds in an icy underground cavern and call them Eggbert, Shelly, and Yoko. At the same time, Diego (Denis Leary) finds himself unable to catch a cocky gazelle (Bill Hader) he has been stalking and decides to leave the herd, believing that he is losing his predatory nature as a tiger. Ellie (Queen Latifah) and Manny (Ray Romano) are expecting their first child, and Manny is obsessed with making life perfect and safe for the family, since his first experiences as a husband and father went bad when his family were killed by hunters.The synopsis below may give away important plot points.
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. Diego is fed up with being treated like a house-cat and ponders the notion that he is becoming too laid-back. 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. When Sid's attempt to adopt three dinosaur eggs gets him abducted by their real mother to an underground lost world, his friends attempt to rescue him.Īfter 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.