Ice Age: A Mammoth Christmas

Scrat eyes a beaver's cache and sneaks in to steal an acorn and decorations. He ties a stash of acorns to a piece of bark and attempts to slip away, but the pile breaks loose and rolls off, leaving him empty-handed and frustrated.

Manny unveils the Christmas Rock, a family heirloom symbolizing Santa's visit. Sid mocks the Rock and Manny forbids him near it. In a mishap, a star-shaped ice piece is flung from the tree and smashes the Rock, prompting Manny to declare Sid on the Naughty List and sending Sid into tears.

Sid sobs over his Naughty List status while Peaches encourages him to make amends. She plans to travel to the North Pole with Sid to plead for Santa's mercy, and Crash and Eddie insist on joining to save Christmas.

The group follows the Northern Lights toward the North Pole. A brief whiteout scatters them, and Sid nearly tumbles off a cliff until a flying reindeer named Prancer saves them and agrees to guide the way.

Back in the village, Manny attempts a patch-up of the Rock using mud and sticks. Ellie discovers that Peaches, Sid, Crash, and Eddie are missing, and Diego tracks Sid's scent to help lead the search toward the North Pole.

Prancer and the group reach the vicinity of Santa's headquarters, where the santourage guards the workshop. The scene is festive with sugar plums and peppermint bark, but an avalanche triggered by the chaos disrupts operations.

Santa inflates the Naughty List as a formal reminder of rules and reality, and Manny realizes that Santa is real. This revelation inspires the animals to rally and repair the damage to Christmas Eve.

The crew works together to restore order, and Santa enlists Prancer to fly the sleigh. He also calls on his family—Dasher, Dancer, Vixen, Comet, Cupid, Donner, and Blitzen—to help pull the sleigh and revive Christmas Eve magic.

By nightfall, Santa departs with the revived fleet, and the group returns to the Nice List, even Sid. The Christmas mission is back on track as the season's magic spreads.

Scrat glances at his present from Santa—a small nut—but the gift slips away in a gust. He is humorously knocked around by the reindeer as he circles the Earth once more, a lighthearted coda to the tale.

Back at the North Pole, Sid is formally restored to the Nice List, ending his fear of eternal Naughty status. The group celebrates their teamwork and the season's renewed magic.

With Christmas saved, the gang heads home to celebrate with loved ones as the holiday arrives, a moment of unity and renewal for all. Scrat's and everyone else's adventures linger as the world spins on.