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.

Starring: Lumpy and Sniffles
Featuring: Cuddles, Flaky, Mime, Nutty, Giggles, Petunia, Disco Bear, Russell, Lifty and Shifty
Appearance: Handy
Deaths: Nutty, Mime, Cuddles, Handy, Shifty, Lifty, Lumpy, Petunia, Giggles and Sniffles.

Moral: "If a job is worth doing, it's worth doing right!"

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

Starring: Splendid
Featuring: Giggles, Cuddles, Pop and Cub
Appearance: Toothy, Petunia, Sniffles, Nutty, Handy, Lumpy, The Mole, Flaky, Cro-Marmot, Russell, Lifty and Shifty
Deaths: Cuddles, Petunia, Toothy, Sniffles, Nutty, Handy, Lumpy, Flaky, Russell, Lifty and Shifty, The Mole, Cro-Marmot, Giggles (debatable) and Cub

Moral: "It all comes out in the wash!"

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.

Starring: Pop and Cub
Appearance: Cuddles, Giggles, Toothy, Flaky, Lifty and Shifty
Deaths: Flaky, Cuddles, Giggles, Toothy, Lifty, Shifty, and Cub

Moral: "Don't throw the baby out with the bathwater!"

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

Starring: Flaky and Flippy
Appearance: Cuddles, Toothy, Mime, Sniffles, Nutty, The Mole and Lumpy
Deaths: Toothy, Cuddles, Nutty, Mime, Sniffles, Flaky, and The Mole

Moral: "Life is a party and everyone is invited!"

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.

Starring: Disco Bear
Featuring: Featuring Giggles, Petunia, Lumpy, Sniffles, Toothy and Handy
Appearance: Lifty and Shifty, Pop, Cub, Russell, Cuddles, Nutty, The Mole, Flaky and Cro-Marmot
Deaths: Sniffles, Toothy, Russell, Nutty, Handy, Cub, Cuddles, Lumpy and Disco Bear

Moral: "The way to one's heart is through their stomach."

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

Starring: Handy, The Mole and Lumpy
Featuring : Lifty and Shifty, Pop and Cub
Appearance: Cuddles
Deaths: Cuddles, The Mole, Handy, Lifty and Shifty and Lumpy

Moral: "A chain's only as strong as its weakest link!"

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.

Starring: Lumpy, Pop and Cub
Featuring: Cuddles, Giggles, Disco Bear, Mime, Lifty and Shifty, and The Mole
Appearance: Handy, Sniffles, Toothy, Nutty (cameo appearance – unseen, but his shriek was heard off-screen), and Petunia
Deaths: Petunia, Sniffles, Handy, Toothy, Cub (debatable), Giggles, The Mole, Disco Bear, Mime, Lifty and Shifty and Lumpy

Moral: "Let sleeping dogs lie!"

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.

Starring: Nutty
Featuring: Lumpy and Handy
Appearance: The Mole, Cuddles, Toothy, Sniffles, Russell, Giggles, Mime, Flaky, Cro-Marmot, Lifty and Shifty, Pop and Cub
Deaths: The Mole, Handy, Sniffles, Lumpy, Nutty, Toothy, and Cub

Moral: "Take the bitter with the sweet!"

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

Starring: Russell, Lifty and Shifty
Featuring : Lumpy, Disco Bear, Pop and Cub
Appearance: Cuddles
Deaths: Cub, Disco Bear, Lumpy, Russell, Shifty and Lifty

Moral: "There's plenty of fish in the sea!"

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

Starring: Lifty and Shifty
Featuring: Pop, Cub, Mime and Flippy
Deaths: Pop, Cub, Shifty and Lifty

Moral: "Give until it hurts!"

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

Starring: Petunia and Lumpy
Appearance: Disco Bear
Deaths: Disco Bear, Lumpy and Petunia

Moral: "Wash behind the ears!"

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.

Starring: Mime
Featuring : Giggles, Petunia, Lumpy, Toothy, Handy, Sniffles, Disco Bear, Russell, Cuddles, and Lifty and Shifty
Appearance: The Mole, Nutty, Flaky, Pop and Cub, and a cat
Deaths: Cuddles, Petunia, Giggles, Sniffles, Cub, Flaky, Pop, Lifty, Shifty, Russell, Handy, The Mole, Lumpy, Toothy, Disco Bear, and Nutty

Moral: "If you can't take the heat, stay out of the kitchen!"

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.

Starring: Giggles and Lumpy
Featuring: Sniffles, The Mole, Pop and Cub
Deaths: A frog, numerous fish, Cub, Pop, a snail, Sniffles, Lumpy, and Giggles

Moral: "A new broom sweeps clean!"

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.

Starring: Lumpy, Lifty and Shifty
Appearance: Petunia, Nutty, Disco Bear, Cub, Pop, Sniffles, Mime and Giggles
Deaths: Disco Bear, Cub, Nutty, Sniffles, Pop, Mime, Lifty, Shifty and Petunia

Moral: "Be careful what you wish for!"

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

Starring: Lumpy
Featuring : Cuddles, Toothy, Petunia, Nutty, Sniffles, and Flaky
Deaths: Flaky, Petunia, Nutty, Toothy, Cuddles, Sniffles, and Lumpy

Moral: "Walk a mile in someone else's shoes!"

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

Starring: Russell
Featuring: Lumpy, Toothy, Cuddles, Flaky, and Giggles
Deaths: Giggles, Cuddles, Toothy, Flaky and Russell

Moral: "A Friend-Ship never sinks"

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.

Starring: Giggles
Featuring: Lumpy, Nutty, Handy, Lifty, Shifty, Mime, Cuddles, Flaky, Toothy, Sniffles, and Petunia, with an appearance of a dead Generic Tree Friend
Deaths: A Generic Tree Friend, Toothy, Handy, Mime, Flaky, Sniffles, Cuddles, Petunia, Nutty, Lumpy, Lifty and Shifty,

Moral: "The sky's the limit when your heart's in it!"

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.

Starring: Splendid, Lifty and Shifty
Appearance: Cuddles, Toothy, Sniffles, Lumpy, Giggles, Handy, Petunia, Pop, Cub, and The Mole
Deaths: Cuddles, Toothy, Sniffles, Handy, The Mole, Cub, Lifty, Shifty, Giggles (debatable), Petunia (debatable), and Splendid^{[lower-alpha 4]}

Moral: "Pressure makes diamonds!"

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.

Starring: Lumpy and Disco Bear
Featuring: Featuring Giggles, Cuddles, Petunia and Cro-Marmot
Appearance: Handy, Mime, Toothy, Nutty, The Mole and Flaky
Deaths: Handy, a whale, and Lumpy (debatable)

Moral: "Absence makes the heart grow fonder!"

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.

Starring: Pop and Cub, and Sniffles
Featuring: Lumpy, Mime, The Mole, Handy, Cuddles, and Petunia
Deaths: The Mole, Handy, Petunia, Cuddles, Sniffles, Mime, and Lumpy

Moral: "Anything worth doing is worth doing well!"

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

Starring: Mime
Featuring: Pop, Cub, Russell, Sniffles, Giggles, Disco Bear, Lumpy, Cro-Marmot, Flaky, Toothy, Cuddles, and The Mole
Appearance: Petunia and Nutty
Deaths: Pop, Cub, Generic Tree Friends, Sniffles, Disco Bear, Toothy, Flaky, Cuddles, Lumpy, Giggles, The Mole, Russell, and Nutty

Moral: "Keep your nose to the grindstone"

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

Starring:Sniffles
Featuring: Lumpy, Cuddles, Giggles and Toothy
Appearance: The ants
Deaths: Lumpy (Twice), Cuddles (Twice), Giggles (Thrice), Toothy (Twice), a turtle, two ants, and Sniffles (Twice).

Moral: "Time heals all wounds!"

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

Starring: Nutty and Lumpy
Featuring: Giggles, Toothy, The Mole, Mime, Disco Bear, and Flaky
Appearance: Russell
Deaths: Mime, Disco Bear, Flaky, Toothy and Nutty

Moral: "Keep a stiff upper lip!"

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

Starring: Splendid and The Mole
Featuring : Lumpy, Sniffles, Russell, Giggles, Cro-Marmot, Handy, Disco Bear, Flaky, Nutty, Mime, and Petunia
Appearance: Cuddles, Toothy, Pop and Cub
Deaths: Mime, Handy, Petunia, Giggles, Toothy, Flaky, Disco Bear, Nutty and Cuddles

Moral: "A picture is worth a thousand words!"

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

Starring: Sniffles
Featuring: Giggles, Flaky, The Mole, Russell, Lumpy, and Toothy
Deaths: Numerous Monkeys, Giggles, Flaky, Lumpy, Russell, Toothy, The Mole and Sniffles

Moral: "Step on a crack, break your mother's back"

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.

Starring: Handy and Giggles
Featuring: Lumpy, Mime, The Mole, Cuddles, and Petunia
Deaths: Cuddles, Mime, Giggles, The Mole, Lumpy, Petunia and Handy

Moral: "Charity begins at home"

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

Starring: Lumpy
Featuring : Cuddles, Toothy, Giggles, Disco Bear, Nutty, Sniffles, Mime, The Mole, Flaky, and Handy
Appearance: Russell, Petunia, Pop and Cub, and Lifty and Shifty
Deaths: Cuddles, Toothy, Giggles, Disco Bear, Flaky, The Mole, Nutty, Mime, Sniffles, barn animals, Lifty, Shifty, Handy, Russell, Petunia, Pop and Cub

Moral: "Friends are flowers in the garden of life"

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

Starring: The Mole and Russell
Featuring: Lumpy, Toothy, Sniffles, and Nutty
Appearance: Cuddles and Handy
Deaths: Toothy, Sniffles, Handy, Nutty and The Mole

Moral: "When the outlook isn't good, try the uplook!"

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

Starring: Cro-Marmot and Lumpy
Featuring: The Mole, Flaky, Nutty, Giggles, Petunia, and Handy
Appearance: Cuddles, Toothy and Sniffles
Deaths: Nutty, Handy, Cuddles, Flaky and Lumpy.

Moral: "Don't make waves"

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

Starring: Lumpy
Featuring : Giggles, Cuddles, Pop and Cub
Deaths: Giggles, Cub, and Lumpy

Moral: "Good things come in small packages!"

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.

Starring: Flaky
Featuring: Sniffles, Mime, The Mole, Lumpy, Petunia, and Cuddles
Appearance: Cro-Marmot, Pop, Cub, Giggles, and Toothy
Deaths: Cuddles, Petunia, Sniffles, Pop (debatable), Cub (debatable), Giggles, Lumpy, Mime, and Flaky

Moral: "Look before you leap!"

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

Starring: Sniffles and the ants
Appearance: The Mole and Lumpy
Deaths: Sniffles

Moral: "Don't make a mountain out of an ant-hill!"

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.

Starring: Disco Bear and Lumpy
Featuring : The Mole, Nutty, Mime, Handy, Pop and Cub
Appearance: Giggles, Petunia, Sniffles, Russell, Lifty and Shifty, Toothy, Cuddles and Flaky
Deaths: Toothy, Nutty, Cub, Handy, and Cuddles

Moral: "Don't split hairs!"

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.

Starring: Sniffles and Lumpy
Featuring: Giggles
Deaths: Lumpy, Giggles and Sniffles

Moral: "It's what inside that counts!"

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.

Starring: Cuddles
Featuring: Lumpy, Sniffles, Handy, The Mole, Russell, and Nutty
Appearance: Mime and Cro-Marmot
Deaths: Russell, Handy, Sniffles, Lumpy, and Cuddles

Moral: "He who pays the piper calls the tune!"

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

Starring: Lumpy
Featuring : Cuddles, Toothy, Lifty and Shifty and Mime
Appearance: Giggles
Deaths: Giggles, Mime, Cuddles, Shifty, Toothy and Lifty

Moral: "A bird in the hand is worth two in the bush!"

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

Starring: Lumpy
Featuring: Cuddles, Sniffles, The Mole, Russell, Giggles, and Flippy
Appearance: Handy
Deaths: The Mole, Russell, Cuddles, and Flippy

Moral: "Actions speak louder than words!"

Flippy consults Lumpy the psychiatrist upon becoming aware of his flip outs that result in him killing innocent people as victims. But when they keep on happening, Flippy eventually ends up in a heated battle with his evil side, Fliqpy.

Starring: Flippy
Featuring: Lumpy, Mime and Nutty
Appearance: Russell, Cuddles, Toothy, Handy, Disco Bear, Petunia, Giggles, Flaky, Sniffles, The Mole, Cro-Marmot, Lifty and Shifty
Deaths: In Part 1: Disco Bear, Petunia, Giggles, Sniffles, Mime, and Nutty
In Part 2: Cuddles, Toothy, Lifty and Shifty, and Flippy

Moral: Part 1 "Two heads are better than one" and Part 2 "Two is company, three is a crowd!"