The Happy Tree Friends go to Lumpy's fun fair, but the roller coaster seems to be incomplete, troubling both the riders and Lumpy himself.

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Splendid has to go to the laundry, but also has to stop a giant snowball from destroying the forest.

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Pop loses Cub, but then finds him playing in the mud. Then, however, while he bathes Cub in the kitchen sink, when he makes the mistake of leaving to pick up the phone, he causes all sorts of trouble for him.

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Flaky and her friends celebrate Flippy's birthday, but carnage erupts when he flips out again.

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Disco Bear finds that he is overweight and feeling insecure, goes to the gym to work out – but it's not as easy as he expects.

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After being arrested by Officer Lumpy, Handy and The Mole go to the slammer and drag a heavy ball to their chain.

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Pop and Cub buy a puppy that seems harmless at first, but attacks them. Lumpy attempts to catch it, but the puppy escapes and goes insane whenever it hears a whistle.

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Nutty takes a bag of sugar from the café while on his way home, but then drops the bag of sugar on a pile of cement bags and unknowingly takes a bag of cement home. When he eats the cement afterwards, he ends up in an ambulance, but the bridge it is on is made of sugar.

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While Lumpy and Russell go fishing, they find a treasure map. Also discovering it, Lifty and Shifty go after the treasure.

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Lifty and Shifty try to steal Christmas, but it won't be easy trying to ransack Flippy's home.

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Petunia's toilet is clogged, so Lumpy comes to "fix" it, but only ends up making a bigger mess.

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Petunia catches fire on her tail while making pancakes. The fire then spreads to Giggles, and then the whole house. Mime calls the firefighters for help, but things do not go well.

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Giggles confronts Lumpy when she catches him emptying his garbage truck in a lake. She has The Mole, Sniffles, Pop, and Cub clean up his litter, but Lumpy will not stop his dreadful pollution.

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At Petunia's lights store, she throws away a lamp that supposedly doesn't work. When Lifty and Shifty take it from the trash, however, they find that it is a magic lamp with Lumpy the Genie inside. As it is passed between Happy Tree Friends, their wishes result in death.

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The Happy Tree Friends go camping, but there seems to be trouble.

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The boat catches fire and the Happy Tree Friends are marooned in the Arctic. Meanwhile, they have to escape a killer whale deep below.

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Nutty trades his cow to Lifty and Shifty for some magic jelly beans. The next day, he and Giggles' house is in the sky after a beanstalk grew out of Nutty. Giggles meets a giant (played by Lumpy), and must stop him, for he is making food with a nasty recipe.

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When Splendid attacks Lifty and Shifty, they use Kryptonut as a distraction to make him puke violently and fall sick. Whenever he tries to stop them, he fails because they have the Kryptonut in possession.

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Disco Bear eats deep fried butter, causing him to suffer a heart attack. Lumpy removes the butter from Disco Bear's heart, but his heartbeat stops. As Giggles pumps life into Disco Bear's body, Lumpy has to find a replacement heart.

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When Pop thinks that Cub fell into a well, he enlists the help of Sniffles, Lumpy, and The Mole to rescue him, which leads them through a mayhem-filled adventure.

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Mime wants to buy a unicycle, but he has no money. He tries to find a job to earn money.

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Sniffles uses a time machine to help the Happy Tree Friends on the playground.

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Nutty tries to eat a jawbreaker, and finds out the reason behind their name.

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While The Mole is photographing for the newspaper, Splendid has to save many people who need to be rescued.

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Giggles, Flaky, and Sniffles discover the Cursed Idol, which summons a crack to kill them. Can Sniffles survive the danger?

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Handy fails to build a house for Giggles, so he gets help from his friends. Unbeknownst to them, Lumpy is using the blueprint paper to fold a crane as they create a house for her.

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Lumpy's prized corn that he has been raising for years is sabotaged by a crow. He makes many attempts to stop it.

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Lumpy the optometrist prescribes a seeing eye dog for The Mole and contact lens for Russell.

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Cro-Marmot wants to have the same fame as Lumpy the surfer.

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Mailman Lumpy tries to deliver mail, but a killer turtle is after him.

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Flaky goes to the airport and has a fear of flying, which she must face in order to save the others from a plane accident.

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Sniffles attempts to eat his prey, the ants, but they defend themselves against their predator.

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Disco Bear has a burnt hair strand, but his barber, The Mole, cuts off everything but his sideburns. Now he has to get his hair (and his beloved afro) back or he'll face humiliation.

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Lumpy and Sniffles find an injured Giggles outside her house. Apparently, she has a bad cold, and Sniffles wants to cure her – but chaos ensues when Lumpy catches the cold and accidentally injects Sniffles into his own body.

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Cuddles auditions to join the Happy Tree Band to replace former member Russell, who has been electrocuted. Despite some difficulties, Cuddles gets the part, but then the real chaos begins during the band's performance.

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Lumpy's beloved pet elephant would not listen to him, while Lifty and Shifty have plans with Lumpy's elephant.

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Lumpy and Cuddles are playing telephone when Cuddles accidentally causes Lumpy to lose his hearing. Even worse, Flippy is trying to kill Lumpy.

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Flippy consults Lumpy the psychiatrist upon becoming aware of his flip outs that result in him killing innocent people as victims.

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But when they keep on happening, Flippy eventually ends up in a heated battle with his evil side, Fliqpy.

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