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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.

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

Poi, tuttavia, mentre bagna Cub nel lavandino della cucina, quando commette l'errore di andarsene a prendere il telefono, gli causa ogni sorta di problemi.

Lumpy deve trovare un cuore sostitutivo.

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.

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

Cub and Pop 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.

Nutty prende un sacchetto di zucchero dalla caffetteria mentre sta tornando a casa, ma poi lascia cadere il sacchetto di zucchero su un mucchio di sacchetti di cemento e, inconsapevolmente, porta a casa un sacchetto di cemento. Quando mangia il cemento dopo, finisce in un'ambulanza, ma il ponte su cui è fatto di zucchero.

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

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

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

Petunia prende fuoco sulla coda mentre prepara frittelle. Il fuoco si estende poi a Giggles, e poi a tutta la casa. Mime chiede aiuto ai vigili del fuoco, ma le cose non vanno bene.

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.

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.

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

Nel frattempo, devono sfuggire a un'orca profonda.

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.

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.

Lumpy rimuove il burro dal cuore di Disco Bear, ma il suo battito cardiaco si ferma. Mentre Giggles pompa vita nel corpo di Disco Bear, Lumpy deve trovare un cuore sostitutivo.

Quando Pop pensa che Cub sia caduto in un pozzo, chiede l'aiuto di Sniffles, Lumpy e The Mole per salvarlo, il che li porta attraverso un'avventura piena di caos.

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

Sniffles utilizza una macchina del tempo per aiutare Happy Tree Friends nel parco giochi.

Nutty cerca di mangiare un rompiada e scopre il motivo dietro il loro nome.

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

Giggles, Flaky e Sniffles scoprono l'Idolo Maledetto, che invoca una crepa per ucciderli.

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.

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

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

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

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

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

Sniffles tenta di mangiare The Ant Family.

Disco Bear ha una ciocca di capelli bruciata, ma il suo barbiere, The Mole, taglia tutto tranne le sue basette.

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.

Per sostituire l'ex membro Russell, che è stato fulminato. Nonostante alcune difficoltà, Cuddles ottiene la parte, ma poi il vero caos inizia durante l'esibizione della band.

L'amato elefante domestico di Lumpy non lo ascolterebbe, mentre Lifty e Shifty hanno piani con l'elefante di Lumpy.

Lumpy e Cuddles toccano il telefono quando Cuddles fa perdere accidentalmente l'udito a Lumpy.

Disturbo da stress post-traumatico che generalmente si traduce in ribaltamenti, uccisione di tutti e persone innocenti come vittime. Ma quando continuano ad accadere, Flippy alla fine finisce in un'accesa battaglia con il suo lato malvagio.