In spite of her larger size, Bounce is determined to win a game of Better Out Than In, but ends up getting herself stuck in a tin and causing Tink and Willi to be captured, so decides to use her size to her advantage and rescue them.
Jolli is sick of all her achievements being shared with Merri, so sets out to prove herself as a solo gumbler, but when she ditches her brother and he is captured by the snikes, she launches a rescue mission and realises she is much better when she works with her other half.
When the scorching junkyard heat dries up the moat around the gumbletree, the gumbles rely on Tink to come up with a plan to keep them safe from a snike attack, despite the fact that the heat has given Tink tinkblock.
When his Bottersnike costume fails to beat Tink's at the fancy dress party, Willi ventures to Snike Hill to prove how convincing his outfit is, but ends up stuck in the King's ear, where he poses as his conscience and begins instructing him on what to do.
When the twins turn out to be poor captains on the junkboat they've built, the other gumbles mutiny and put Toot in charge, but when the twins are captured by the Snike's enemy ship, the gumbles must mount a swashbuckling rescue mission.
When Happi teaches Merri and Jolli the ancient art of gum fu, he fails to mention that it is useless when it comes to fighting actual snikes, and when the twins set off to Snike Hill to pick a fight, it is up to the other gumbles to save them.
When Sammi Whammi Gumble returns from space, he tries to hide the fact that he is out of shape to try and impress the other gumbles, but when his charade gets Happi captured, he is forced to come clean to Tink in order to save him.
When the gumbles are attacked by one of Smiggles' dream creatures, Merri and Jolli wake Smiggles up, getting captured in the process, so Tink decides to impersonate a Smiggles dream creature in order to save his friends.
When Tink accidentally gets the twins tangle-spanged, he sets off to find grubs to cure them, unaware that Gubbo has invented a machine to round up all the grubs in order to starve the gumbles out of existence.
Bounce is taken captive by a colony of grubs, and soon finds that she enjoys their company, but after Tink trades the gumbles grub supply for Bounce's safe return, she has warmed to the grubs so much that she begins behaving like one, landing herself and her friends in trouble on Snike Hill.
After being captured by the Snikes and put in the mattress mine, Tink, Bounce and Willi bicker about whose escape plan is the best. Above them, the Bottersnikes hold a pageant to crown the ugliest Snike on Snike Hill.
Whilst being held captive by the Bottersnikes, Tink overhears how much the king fears rain. He decides to pretend he has weather prediction powers and predicts a storm in order to trick the Snikes into hiding, leaving the Gumbles to play in peace.
Merri and Jolli are having a great time playing pranks on (or grubbing) the other Gumbles, but when they push it too far and try to prank the Snikes, they are captured. It's up to Happi, who wrote the book on grubbing, to rescue them with the ultimate prank.
Tink is delighted when Happi drinks too much youngenberry juice, causing him to stop being his usual worrisome self and instead embark on risky gumbling shenanigans. But when Happi begins to get out of control, the other Gumbles must return him back to normal before he puts them all in danger.
After Happi finds chili-grubs hiding in the chili-weeds around the Gumbletree, Tink dares Willi and Bounce to join him in eating them all. But when they make the Gumbles smell so bad that it begins to attract Snikes, Willi is captured and it's up to Tink and Bounce to use their stench to save him.
When Tink and Bounce become fused together, they soon grow sick of each other. But when the King Snike captures them as his servants, they must overcome their disagreements and cooperate in order to escape.
Indecisive Willi finds a talking doll that provides answers to questions and begins using it to help him make decisions. But when it suggests he try to make allies out of the Bottersnikes, he is captured and must learn to think for himself.
After listening to Tink, Bounce and Happi showing off about the things they've stolen from Snikes, Willi decides to get something of his own. But when he is caught by the king and used as a hairpiece, Tink herself has to pose as a hairpiece for Chank in order to rescue him.
Jolli finds a Polaroid camera and takes some snaps of Merri posing with a sleeping Snike. But when Jolli gets jealous that Merri gets all the praise for the photos, she convinces him to take some photos of her - but ends up causing him to be captured by the Snikes.
When an over-inflated and spanged Float gets stuck above Snike Hill, she accidentally gets Tink, Bounce and Willi captured, and must pretend to be a giant raincloud that Weathersnike predicted, and scare the snikes into hiding so she can save her friends.
When Toot accidentally swallows a kazoo, the sound of his voice summons giant grubs that enjoy sucking on gumbles, and it's up to Toot to find a way to free his friends and rid the junkyard of the grubs.
When Tink completely forgets Bounce's gumbleday, he lies and pretends he has a great present waiting for her in the junkyard. But when he leads her straight into a snike attack, he is forced to admit the truth.