In this fifth and final installment, Manny, Sid and Diego realize that Scrat was the cause of the accidental end of the world. This time there's no subplots.
July 17, 2015
- Manny (Ray Romano) - realized that Scrat was the accidental cause of the near end of the world, in the end,
- Sid (John Leguizamo) - shows a soft side for Scrat since he saved him in "Ice Age: The Meltdown", in the end,
- Diego (Denis Leary) - watches Scrat from going acorn crazy and causing another crack, in the end,
- Scrat (Chris Wedge) - is being watched by Manny, Sid and Diego from escaping, in the end, gets chased by Louis for wrecking his home!
- Shira (Jennifer Lopez) - Diego's wife and former first mate of the Late Captain Gutt's crew, in the end,
- Peaches (Keke Palmer) - Manny and Ellie's daughter, in the end,
- Ellie (Queen Latifah) - Manny's wife and Peaches' mother, in the end,
- Crash (Seann William Scott) - Ellie's adopted possum brother and Peaches' uncle, in the end,
- Eddie (Josh Peck) - Ellie's other adopted possum brother and Peaches' other uncle, in the end, gets a nice sleep!
- Louis (Josh Gad) - Peaches' best friend, in the end, Chases Scrat for wrecking his home to get the nut back!
- Clayfoot (David LeTeur) - an annoying Entelodont who often speaks for world peace infront of Manny!
- King Leo (Donald Sutherland) - A Cave Lion who welcomes Manny and his family!
- WakaWaka (Claudia Black) - a Haast Eagle who uses dark magic from a special tree!
- Julia (Craig Ferguson) - the main antagonist after Scrat, ever since Scrat went nuts, he witnessed him picking up an acorn for the first time and then setting on the ground, causing a crack in his den, and causing his collection of rocks to be destroyed, and he has been after Scrat ever since, he is a Ursus Speculus
Scrat goes to the island where Manny and crew went after the events from the "Continental Drift", Scrat tries it again only this time on a beach, where Sid is practicing his tone deaf lines which irritates Diego, and Manny couldn't get any sleep, and shouts "Quiet. Then they hear a crack when Scrat wrecked the beach side, then they realized who caused the drift!
In a Flashback it showed he was a shy, and lonley Squirrel, then he was lost in a tree being chased by Owls, and then hid in a tree, where he was bonked on the head with Acorns, and was driven mad ever since.