The Creeper is back and he uses his knowledge of the Core to gain power and force the Animalians to do his bidding. Alex and Zoe are sent to protective custody, while G'Bubu and Iggy are searching the portals for Livingstone.

After a few days in the 'real world', Alex and Zoe miss Animalia and want to return. But when they arrive, the city is in disrepair. They discover that time in Animalia moves at a different rate and a few days in their world is over a year in Animalia. Much to their surprise, G'Bubu and Iggy are no longer the leaders of Animalia, and instead King Tyrannicus is ruling the city.

With the Creeper gone and peace restored to Animalia, Alex and Zoe decide it's time to go home. Livingstone also decides to take a much needed break, but before he can go, he must choose a new leader. Allegra and Tyrannicus vie for the position, but ultimately Livingstone knows that a good leader must lead with his heart.

Alex finds the Guardians of the Core Guidebook, which provides words and phrases that can help the Core. But when Alex isn't careful with the words he uses, the Core becomes a musical jukebox causing Animalians to sing and dance uncontrollably.

Alex and Zoe join forces to write a sci-fi story called Tomorrow. The story asks if the world was going to end tomorrow, what would you do?

A Corespore blasts off and flies to the land of Over and Beyond, where fictional characters live. With this Corespore missing, Animalians are unable to agree about anything.

When pages disappear from Animalia's Big Book of Words, Animalians lose the ability to use the words on them. As their vocabularies shrink, the chaos in Animalia grows. Alex and Zoe must find why the pages are disappearing and restore the words to Animalia.

Following the blueprints of the scientist Peter Applebottom, the Creeper has invented a device that can corrupt the Corespore. This turns all Animalians, including Alex and Zoe, into ninnies. Gorillas are the only species not affected by the corruption, so G'Bubu leads the quest to restore the Corespore and free Animalia from ninni-ness.

Once a year, Animalia celebrates with the traditional story-telling game known as Scary Story-Go-Round. Everyone in Animalia takes a turn to make up one continuous and very scary story.

Alex gets a video camera for his birthday and embarks on video research which turns into a hard-boiled detective documentary about the 'missing Melba'.

When Alex and Zoe share a meal with the Horrible Hogs at the Elephants' Eatery they're appalled by the Hogs' awful table manners, crudeness, and limited social skills. The Hoity-Toity toucan overhears, and puts a spell on Alex and Zoe, making them Neanderthal versions of themselves.

Ever since Alex helped the Creeper escape from the portal, the boy has been wracked with guilt. He has the naive and unrealistic hope that he can convince the Creeper to turn over a new leaf.

Alex and the gang put on a production of Treasure Island, but a corespore blows mid-performance, sending Animalia into a treasure hunt frenzy. Alex and Zoe journey to Over and Beyond to find the missing corespore.

Alex bets Zoe that she can't resist talking for a full day. It's a vow of silence. So Zoe spends the day listening to the amazing and magical world of Animalia, and makes new friends and huge discoveries.

The Creeper is accused of stealing from the Animalians, but without any hard evidence, Livingstone refuses to blame it. Encouraged by Tyrannicus, the enraged Animalians rush into the tunnels. It's a trap, however, and they become stuck. Meanwhile, the Creeper tries to sabotage the Core but is thwarted by Allegra, the only Animalian not in the tunnels.

Livingstone and Reenie are struck by the 'glums', a rare Animalian version of the blues. There is only one cure for the syndrome: a good, long laugh. But those affected with the glums don't find anything the least bit funny, so Alex, Zoe, G'Bubu and Iggy must criss-cross the kingdom in search of the funniest joke in Animalia.

When nightmares plague Animalians, Alex and Zoe go to 'over and beyond', where they must find the Dream-Weaver and rescue Animalia from its dream troubles.

Tyrannicus plants a story that Livingstone is to retire. Livingstone refutes the rumour, but many Animalians believe Tyrannicus. When the Truth Corespore blasts off, Animalia can only speak in lies, so the kids must find the Corespore before Tyrannicus tricks Livingstone into quitting.

Iggy is asked to babysit Echo while his parents, Erno and Elni, handle a portal-guarding shift. To entertain the baby elephant, Iggy tells him tales of Animalia in which Iggy is cast as the hero. But the Creeper sweeps Elni and Erno into the tunnels in order to kidnap Echo, whom the Creeper believes stands in the way of him controlling Animalia.

Livingstone calls an Animalian meeting to reveal that the Creeper is back. He journeys into the tunnels with Alex and Zoe to find it. However, the Creeper uses the Wind of No Return to foil the heroes' attempts.

The search for the Creeper leads Alex and Zoe to the Chamber of Legends, a dusty room filled with Animalian relics. Alex reveals that he helped a weasel escape from the tunnels, and only now does Alex learn that the weasel is none other than the notorious Creeper.

The Creeper sabotages the Core by destroying a main root which causes the animals to revert to their original language. The kids must find the origin spore that allows the animals to communicate.

Tyrannicus starts his own nation of Tyrannia and teams up with the Creeper to declare war on Animalia, with the goal of driving Alex and Zoe out of the kingdom.

On a visit to his grandfather's home, Iggy must come to terms with the fact that he is not a full-blooded iguana, but rather, is part chameleon. With the help of his grandfather Carmine, Iggy gets in touch with his 'inner chameleon' and overcomes his fear of a recurring nightmare.

Alex explores Animalia's tunnel system where he becomes trapped, along with an Animalian he has never met before, a weasel named TC.

Zoe and Tyrannicus join forces to shut down and drain the swamp. When Alex is struck with a swamp fever, Zoe puts aside her aversion and teams up with Allegra to track down the elusive plant.

Livingstone is feeling unappreciated, but he gets the day off when a Corespore blast results in Livingstone turns into a happy-go-lucky twit.

Allegra the crocodile admits to Zoe that she can't read. Zoe helps her to write a song for Animalia's talent contest. Iggy and G'Bubu also perform in the competition.

When G'Bubu is hit on the head by a bongo nut, he assumes the personality of Peter Applebottom, a brilliant but pompous scientist who claims to know how to permanently fix the Core.

Zoe travels to the land of Over and Beyond, a realm populated by fictional characters, to rescue two zebras who have been captured by a dragon. To allow them to escape, Zoe must stay behind and entertain the dragon with her stories like Scheherazade.

To impress Zoe, Iggy the iguana dons a cape and becomes Animalia's secret hero.

All the animals lose the power of speech.

In this episode, the animalians become hooked on TV.

Chaos erupts when words go missing.

In this episode, an important message is incorrectly communicated. The kids struggle to discover the truth about Livingstone's disappearance.

Alex and Zoe go on a search for a Corespore in a place where lost Animalian memories go, Memory Canyon.

Zoe and Alex must recover the Corespore before the Animalians are stuck forever.

In this episode, G'Bubu the gorilla is swept back in time to an era when his ancestors fought for control of the trees against their enemies, the giant tree frogs.

In this episode, the animals fear that they will be returned to their feral, uncivilised state. Zoe is torn between her desire to help and her need to return home.

Alex and Zoe are mistaken for monsters when they first arrive through the portal.