Os pinguins investigam o estranho desaparecimento de Maurice depois de uma briga com Julien por uma máquina fotográfica. Então descobrem que está em um lixão em Nova Jersey e o resolvem levá-lo de volta. Enquanto isso, Julien pensa que Maurice está na máquina.

Os pinguins constroem um foguete para ir à lua depois de serem aborrecidos pelo Rei Julien . graças a um erro de cálculo feito por Kowalski (Kowalski depois diz "me esqueci de ligar o motor dois"), eles terminam em cima de um edifício com um gato que tenta pegar pássaros. Entretanto, Julien e os outros lêmures tratam com as armadilhas no habitat dos pinguins tentando "pegar emprestado" a sua televisão.

Quando Marlene grita a noite, os pinguins decidem investigar o barulho. Depois que Julien "assusta o espírito", ele volta. Os pinguins percebem que "o espírito" é um jacaré chamado Roger que grita por causa do seu medo do ronco de Marlene.

Quando os bonecos de pelúcia de Mork de brinquedo da loja de presente do jardim zoológico ficam muito populares, Julien fica com ciúmes e sabota-os deixando o inventário inteiro de bonecos de Mork no habitat dos gambás, por isso eles terão de ser devolvidos à fábrica. Infelizmente, o verdadeiro Mork é levado também. Os pinguins têm de salvar o Mork antes de que ele seja incinerado. Enquanto isso, os pinguins recrutam Julien como agente "rabo anelado".

Maurice bribes the animals with candy so they'll celebrate "King Julien Day."

Marlene discovers a lost egg and thinks the Penguins would be perfect egg watchers.

When Skipper steals Julien's radio batteries, a wild chase gets them stuck in a kangaroo pen.

Julien challenges the penguins to play Capture the Flag, but the lemurs win every time.

Julien can't take Mort's obsessive feet touching, so he exiles Mort from the lemur habitat.

When the zoo installs web cams to bring in new visitors, Private accidentally becomes an Internet star.

Skipper accidentally causes King Julien to lose his beloved crown. Now the penguins go on a dangerous mission to retrieve the crown from the sewer.

Maurice is left in charge when Julien is carted off to the zoo infirmary.

After Rico ingests a strange liquid, he discovers he can no longer regurgitate items from his belly.

The penguins and lemurs face off in a winner-take-all race around the zoo.

When the penguins lose access to their favorite snack, Skipper and crew leap into action to find a new supply.

The penguins aren't happy when their fish supplies are replaced by imitation fish cakes.

The sewer rats challenge the penguins to a game of ice hockey.

When the vet rounds up the penguins to give them a shot, Skipper's fear of needles takes over.

When a solar eclipse occurs, Julien is tricked into thinking it's his fault.

Mort quadruples in size after being exposed to Kowalski's super-ray.

Marlene's can't stand her new roommate, so she asks the penguins to help get rid of her.

Rico ignores a freaky fortune from his cookie, but Julien thinks Rico needs to believe in the superstition.

When a robot is sent to the zoo to learn from Julien, the penguins set out to retrain it.

The rats have been terrorizing Roger the alligator, so he comes to the penguins for help.

A giant balloon float of a killer whale haunts Private.

When Marlene sets foot outside of captivity, she snaps and becomes a feral beast.

Officer X of New York City's animal control is after Max, the penguins' stray cat friend.

Phil tries to win the heart of a visiting chimpanzee named Lulu.

The penguins must ditch the watchful eye of a nosey scientist before he stumbles upon all their secrets.

A girl loses her doll at the zoo, and Rico is convinced to give up his own doll to replace it.

A mysterious bandit is robbing the zoo animals of their beloved possessions.

Julien is horrified when the baboons' dance routine is getting more attention than his own.

A zoo blackout elevates King Julien's delusional rulership ideas to a whole new level.

The other penguins fear that Skipper has become a zombie after a visit to the vet.

Some unfriendly hornets make plans to sting anyone who enters the zoo.

After a mishap with Julien, Maurice and Mort are banished from his kingdom.

A tiny frog with a nasty attitude moves to the zoo and starts terrorizing the other animals.

After a fight, the penguins show Mason and Phil how much they need each other.

Skipper has an identity crisis when Alice mentions that one of the penguins is actually female.

Burt the elephant asks the penguins to help him break out of the zoo.

Marlene catches a glimpse of Fred the squirrel and falls in love at first sight.

The animals make a commercial to promote the zoo after a new TV channel renders them obsolete.

When a giant fish terrorizes the duck pond, Skipper leads a mission to eliminate the menace.

Kowalski accidentally creates a living blob of jelly... with a big appetite.

When a beautiful falcon crash-lands in the zoo, Skipper insists that she stays.

Private is upset when Mort is chosen to be the cover animal for the zoo's brochure.

When arch-nemesis, Dr Blowhole kidnaps King Julien and threatens to melt the Arctic Circle, the Penguins have to stop him, but they walk into a clever trap.