Private's big heart overcomes his instinct to flee as he helps a stranded young leopard seal get from New York back to her home in Antarctica. The rest of the team (plus stowaway King Julien) follow in their submarine to make sure the young seal and Private make it in one piece. Problem is, they should have been looking out for themselves - they end up on the menu at the leopard seal village!
The penguins notice it's been quiet at night.The rest of the animals have been sneaking out to spend time partying in the park! The plan to sneak out then return by morning to avoid getting caught by Alice is put in jeopardy when they run into a traffic jam in the tunnel.The penguins make a new friend in Dode the dodo bird, who they clone back into existence after a pesky bout of extinction. Having grown up with no natural enemies, Dode has no fear and it leads him to daredevilish behavior.
Kowalski's obsession with Doris the dolphin drives him to invent a love ray. It works like a charm until Alice falls for a trashcan, Julien falls for Mort, and Skipper orders the ray to be put in reverse. Private gets hit by the reverse ray and instantly loathes Kowalski. Told as a courtroom flashback, Kowalski unwisely revives Jiggles in a small, whipped cream-eating version. The little green cubes multiply on impact, however, and are soon threatening to cover the surface of the earth.
Thanks to am impromptu bouncy game, Julian is launched onto a city bus that drops him off downtown. He is snatched from the street by Gladys who believes he is a stray cat and taken home to live with her other 'cats'.
The Commissioner's toupee blows off and sticks to Maurice. Julien and Mort chase him, intent on beating the monster stuck to his head. The baboon ladies take Maurice in because they mistakenly think he's a male baboon.Shelly the ostrich gets stuck in cement and Rico can save her. Shelly falls for him hard as a result Rico's heart forever belongs to his doll. Shelly swipes the doll and tries hard to win his heart, but Rico doesn't budge and his doll is accidently hauled off in a truck.
Watching too many ninja movies has brainwashed Leonard the koala. During the day, as he sleeps, he terrorizes everyone by sleepfighting. Private is left to babysit four adorable ducklings as the rest of the gang tries to crash a monster truck rally.
Skipper agrees gives a day off from training to the first penguin brings him a kipper. The penguins are determined to make opening day a blockbuster movie! The penguins need his powers to knock Alice out.
Fred stumbles onto a jackpot oak tree which is loaded with acorns. Fred and Julien enter a partnership looking for ways to spend on the good life. The Red Squirrel has designs on the loot though and captures the hapless twosome in order to squeeze the acorns out of them. A special delivery has come from Madagascar. A baby Fossa! Everyone is enchanted by the little tyke except King Julien, who sees him as a lemur-devouring predator, and he has the toothmarks on his butt to prove it!
Watching too many ninja movies has brainwashed Leonard the koala. During the day, as he sleeps, he terrorizes everyone by sleepfighting (as opposed to sleepwalking).Private is left to babysit four adorable ducklings as the rest of the gang tries to crash a monster truck rally (unsuccessfully). The ducklings are a rowdy bunch and throw a party, inadvertently attracting party-crashing rats and wasps who attack the party food.
King Julien's archrival, Clemson, returns in another attempt to claim the lemur crown. This time the sneaky lemur has a document that "proves" King Julien is not the legitimate king because he wasn't born in Madagascar.
When a massive sneeze from Rico causes the underground tunnel system beneath the zoo to rupture, Skipper calls in 4 cute beavers to fix the situation. Ever have one of those rare days when everything you do goes just right? Skipper's having one of those perfect days, and he decides to use the opportunity to settle an old score - he plans to break into the Danish embassy and clear out the disparaging file they have on him.