In Antarctica, three young penguins – Skipper, Kowalski, and Rico – defy the laws of nature to save an egg the other penguins believe to be doomed. After saving it from a pack of leopard seals and accidentally setting themselves adrift on an iceberg, the egg hatches into Private.
On Middle Island, penguins have made their home, but foxes have found the island and have reduced the population of penguins. An eccentric chicken farmer named Swampy teams up with his granddaughter to train their mischievous dog, Oddball, to protect the penguins from these predators in an attempt to reunite his family and save their seaside town.
Every emperor penguin sings a unique song called a "heartsong" to attract a mate. If the male penguin's heartsong matches the female's song, the two penguins mate. Norma Jean, a female penguin, falls for Memphis, a male penguin and they become mates. They lay an egg, which is left in Memphis' care, while Norma Jean leaves with the other females to fish. While the males struggle through the harsh winter, Memphis briefly drops the egg. The resulting chick, Mumble, is unable to sing but can tap dance. Nevertheless, he is enamored with Gloria, a female penguin who is regarded as the most talented of her age. One day, Mumble encounters a group of hostile skua, with a leader who is tagged with a yellow band, which he says is from an alien abduction. Mumble narrowly escapes the hungry birds by falling into a crevice.
Un couple de manchots de l'Antarctique, Peter et Polly, se retrouvent séparés. La femelle Polly est prise au piège sur un morceau de glace qui dérive tandis qu'un requin tente de la dévorer. Peter se lance à son secours et seules la chance et la perspicacité arriveront à réunir le couple sous les aurores australes.
T'choupi s'installe dans un village en bord de mer en compagnie de son nounours Doudou. Tous deux découvrent le village et la plage, se font deux nouveaux amis, Pilou et Lalou, et profitent agréablement des activités des vacances. La famille de T'choupi s'agrandit avec la naissance de sa petite sœur Fanny. Un jour, le quotidien heureux de T'choupi et de ses amis est perturbé par les agissements d'un mystérieux voleur qui leur dérobe peu à peu leurs jouets. T'choupi doit alors mener l'enquête pour découvrir et stopper le coupable.
Thomas "Tom" Popper (Jim Carrey) is a divorced real-estate entrepreneur whose father traveled around the world during his childhood. He learns that his father has died during an adventure to Antarctica and discovers that his father's will asks for his son to be given a souvenir from his last adventure. The next week, a crate containing a gentoo penguin (Captain) shows up at his doorstep. Eventually, five more penguins arrive. Popper intends to give them away but changes his mind when his children, Janie and Billy (Madeline Carroll and Maxwell Perry Cotton), think that the animals are Billy's birthday present. That night, Popper meets with New York zookeeper Nat Jones (Clark Gregg), who asks for the penguins. Popper tries to stall him by asking him to collect the penguins another time. Jones agrees but not before warning that the conditions in Popper's apartment are not good enough to raise penguins. Popper is forced to pay the board of his apartment to keep the penguins in his apartment and lies to his arrogant neighbor Kent (David Krumholtz) about there being no animals in his home.
À l'âge de 9 ans, le petit Yves-Marie avait demandé à Jacqueline, du même âge : « Épouse-moi ». Elle lui avait répondu : « Je t'épouserai le jour où tu iras dans les étoiles ». Vingt-quatre ans plus tard, Yves-Marie est devenu cosmonaute. Il se présente à Jacqueline pour lui rappeler sa promesse. Devant l'embarras de Jacqueline, qui s'apprête à épouser un autre homme, Yves-Marie lui propose : « Essaye-moi une journée avant de dire non... »
Erik, son of the penguins Mumble and Gloria, is unable to dance like Emperor-Land. Erik and his two best friends, Bodicea and Atticus, follow Ramon to Adélie-Land and find that Adélie-Land has been ruled by a God-like "penguin" named Sven. Sven is actually a puffin in Adélie-Land who survived the loss of his native fishing grounds due to his "miraculous" ability to fly. Erik instantly becomes enamored with Sven, who takes a liking to him. Sven and Lovelace tell the others that they were saved by humans. The two eventually flee (under Sven's mistaken assumption that the humans were going to eat them) and end up on Antarctica, where Sven performs his first miracle by revealing moss to the local penguins. Sven uses his power of "Sven Think" to help Ramon find a mate. Ramon instantly falls in love with Carmen, another Adélie penguin who is uninterested. Mumble follows the chicks' footprints to Adélie-Land and orders them to return to Emperor-Land, but they refuse. Sven sends Erik back to Emperor-Land with Mumble.
Hubie, a shy, gullible but kindhearted penguin, is in love with the beautiful and kind Marina, but lacks self-confidence leading him to be bullied by the much more impressive, but vain and cruel Drake, who also wants Marina, but clearly for lust. One night, Hubie and Marina manage to confirm how they feel for each other, but Hubie cannot quite find a perfect pebble to propose to Marina with. He wishes on a star to make his dream come true and he receives an emerald from the sky. Ecstatic, Hubie rushes to find Marina but is stopped by Drake, who demands Hubie to give him the pebble. Hubie refuses, so Drake throws him into the water. Hubie narrowly escapes from a leopard seal and climbs on to a piece of ice where he is swept away from Antarctica.
Samuel L. Jackson narrates the story about a group of male penguins that make a 70-mile trek to go to their breeding grounds where females are waiting to have sex with them. These penguins include Carl (Bob Saget) and Jimmy (Lewis Black), two friends who talk about relationships and other things as they meet new characters including Marcus (Tracy Morgan), a penguin who likes to kid around and brag about his huge penis (an illogical point, since penguins do not have penises and instead have cloacas), and Steve the snowy owl (Jonathan Katz), who gives Carl advice on his life in a Freudian kind of way while billing him for the two quick sessions. Meanwhile, Melissa (Christina Applegate) and Vicky (Mo'Nique) argue about men and other women who bother them as they wait for their mates to arrive at the breeding grounds.