It's the Biggest Chuckleberry in Treetopolis contest and Ariela and the Mushas are both determined to win the trophy. With the competition reaching fever pitch and giant chuckleberries poised to cause havoc across Treetopolis, Tom needs all of his action-hero skills and Big World Magic help from the audience to ensure the rightful winner receives the trophy.

Tom must bravely lead his friends in search of their squizzle, lost in the garden of Rickety McGlum, a spider believed to be mean. As the hunt through the garden infested with slime-splitting weeds turns into a rescue mission, Tom needs Big World Magic help from the audience and some assistance from a surprising new friend to overcome this particularly sticky situation.

After one of Zigzoo's magical inventions spectacularly fails, he decides to quit inventing forever. Trying to encourage him to invent again by making up silly problems for him to solve, Twigs inadvertently causes a disaster that threatens all of Treetopolis and only Zigzoo can fix it. Tom and his friends have to convince Zigzoo to return to inventing before disaster strikes, but the day can only be saved with Big World Magic help from the audience.

Tom and Twigs are in for a frenzied, rollercoaster day when they swap Spell School for running Ariela's ranch. Tom needs his friends and Big World Magic help from the audience to calm the bedlam that's in store, and maybe they'll all discover that the grass isn't always greener.

A game of hide and seek goes awry when Squirmtum's fear of the dark causes a disaster. It's only with Big World magic help from the audience, and by helping Squirmtum to overcome his fear, that Tom stands a chance of saving his friends and Treetopolis from a cavernous calamity.

Twigs causes no end of trouble when he uses a magic pebble to grant his every wish. Worse still, a magic pebble in the hands of the Mushas could spell catastrophe for Treetopolis. Battling against a bizarre barrage - from a giant rolling cupcake to an epic slick of stinky slime flooding the castle streets - Tom has to step up to save the day. He needs Big World Magic help from the audience to succeed.

When Zigzoo hastily builds a robot to help him with his jobs, it quickly causes more problems than it solves. Tom needs Big World Magic help from the audience to fix the mishaps and mayhem that spring up all over Treetopolis. As the frenzy unfolds, perhaps Zigzoo will see that it's better to do a few things well than to take on too much and do nothing properly.

When Squirmtum falls out with Tom and the other Treelings, the Mushas trick him into helping them with their audacious plans for mischief to get hold of magic spell books. Tom must unravel the mystery of what the Mushas are plotting in order to win back his friend and save the day, but he needs Big World Magic help from the audience to triumph.

When a colony of hungry bees moves into the ranch, Ariela's unwillingness to share her nectar spells disaster for everyone. The situation escalates and lands her friends, her critters, the bees and her whole ranch in danger. As ever, only Tom can avert a sticky end and save the day, but he needs Big World Magic help from the audience to succeed.

Tom and his friends decide to help Squirmtum the woodlouse realise his dream of flying, but Squirmtum's overexcitement leads to catastrophe. An action-packed aerial rescue becomes an epic underground rolling race against time. Tom needs Big World Magic help from the audience and Squirmtum's unique and surprising skills to save the day.

When Tom and Twigs break Treetog's casting crystal due to their conflicting approaches, it's a race against time to find a replacement before all magic runs out of Treetopolis! As their differences lead to squabbles, the rescue and their friendship is threatened. Tom needs Big World Magic help from the audience to save the day, but their mission will only succeed if he and Twigs learn to appreciate their differences.

The Mushas, Puffy and Stink, trick Tom and Twigs into carrying out their mischievous plans to mess up Treetop Castle. If Treetopolis and his friends are to be saved from a mucky muddle, Tom must summon the courage to question things that he knows in his heart are not to be trusted. As the stinky slime flows, he needs Big World Magic help from the audience to save his friends, tidy up the town and foil the plans of his fiendish fungus foes.

It's the day of Ariela's Rip-Roaring Rodeo Show and, despite having far too much to do, she won't let anyone help her. As Tom, Twigs and Squirmtum struggle to master their performance pieces and the mushas get to work messing things up, Ariela's ranch and her rodeo are thrown in to disarray. Ariela needs to learn that accepting help from friends is far stronger than struggling on alone. Tom and friends need all of their action skills to save her show, but to save the day and to deliver the crowning magical finale Tom needs Big World Magic help from the audience.