A criminal lady named Maria Ladrones and her husband who is just a hand, (named Milo Ladrones) comes to Muriel's house when the TV needs fixing. Eustace goes in the van to watch their TV. For fun, Mariah says, she makes her hair like Muriel's and dresses up like Muriel. She steals Muriel's gift certificate and everything. When Mariah and Milo steal a diamond the police think Muriel did it because Mariah looked like Muriel. Courage must clear Muriel's name.

The science teen (or Di Lung as some call him) makes an ultra robot he calls Mecha-Courage. It takes Courage's place. Muriel and Eustace can't tell the difference, and they like Mecha-Courage better. (mostly Eustace) Courage challenges Mecha-Courage to a battle in the Roman Colessium! Mecha-Courage beats Courage good, but in the end, his battery runs out and he blows up. Courage is happy to be back with Muriel.

Muriel, Eustace, and Courage go to a campsite for the weekend, and Muriel is kidnapped by two raccoons. Courage must save her as well as the raccoons who are trying to be captured by Eustace, who wants to get a $50,000 reward.

While Eustace is driving home, Shirley the Medium throws out a Velvet Vic record when doing some spring cleaning and Eustace plays the record Velvet Vic comes out and then Muriel becomes trapped in the record and Courage has to get her out.

A storm goddess who always has a raincloud around her, comes to the Bagge house. She's looking for her dog, Duncan, who looks just like Courage. She wants a new dog so desperate she tries to steal Courage. Muriel argues with her, while the stormcloud destorys the house. Mr. (Charlie) Mouse tells Courage where Duncan is. Courage looks for Duncan and finally finds him in a sewer licking the God Bone. He gets him back and the goddess goes away and all's well with the exception that the house is still destroyed and Eustace was sucked up by the cloud.

The sandman is having trouble sleeping at night, so he takes Muriel's sleeping sand, causing Muriel to have insomnia. Courage must find the sandman and get her sleeping sand back.

The computer develops a virus and it traps Muriel inside the computer. Courage must go into the computer world to bring her back.

During a vacation to a viking location, Muriel is mistaken as the leader of a group of vikings! Courage now has to retrieve her before the battle against the trolls. One of the trolls and the valkyries get married and peace is settled between the 2 groups. Courage and Muriel attend the wedding.

While on a tropical island, Courage and Muriel discover a underwater city made of coral. There, they befriend the citizens. Meanwhile, Eustace informs Ma that there are small creatures living in the coral. Ma decides that the coral there can make fine wigs, and sets off to destroy the coral city and evict the creatures of their coral for her wig factory.

A plane crashes down at the Bagge house. A guy inside the plane named Conway claimes by living in a dirty house you can live better, and pay less. The Bagge house gets full of garbage, and Muriel and Eustice get really skinny. The dirty atmosphere ruins their health. Courage turns Conway's plane into a big vacuum and sucks up the dirtyness in their house. Conway leaves, and Muriel and Eustice return to normal health.

Courage and Muriel go on a much needed trip to get away from Eustace. They go aboard the Katz submarine and Muriel is put to work making tea. Courage is really not allowed on the ship but he sneaks into someone's suitcase and pretends to be a ventriloquist dummy. He finds out that Katz plans to sink the ship with everybody on it. Courage burps up bubbles and everybody floats to the surface to safety, except Katz who gets ate by a shark.

When a strange pink curtain is going through Nowhere making the citizens cruel and mean, Courage finds out that all of this is caused by Old Man, who is cruel and unhappy, and wants everyone else to be cruel and unhappy.

A group of bullfrogs with no pond invade the Bagge house. Their leader is named Buffo. They build a pond on the floor and Eustace and Muriel have to act like frogs and will even be eaten. Courage sticks bees to flypaper and sticks it on the ceiling near the fan. The bullfrogs, thinking it's appetizers stick their tongues to it, but Courage turns the fan on which whirls the tongues around and Courage holds their tongues and tosses them away. All except for Buffo, who goes away and becomes a baseball player.

Two alien teddy bears blast the citizens out of sight when they are looking for a giant worm. Courage discovers the worm outside of the farmhouse, and it reacts whenever he plays a tuba. The space bears come to the scene, and reveal that the little worm is actually a space worm owned by an alien girl named Tulip. As Muriel and the two teddy bears are eaten by the beast, Courage must take the worm to outer space before Muriel and the bears are digested.

Courage, Muriel, and Eustace win a trip to an art museum in Europe. Muriel talks about how her mother aways said that Muriel aways looked liked the Mona Lisa. They go into the museum right before closing time and then get locked in. They fall asleep in their and when they wake up Muriel walks up to the painting of the Mona Lisa and gets pulled in. Then the Mona Lisa steps out of the painting (the plantets align and the portrait people switch places with real people) Eustace switches places with the thinker and Courage has to chase down the Mona Lisa so he can get Muriel back. The Thinker and the Mona Lisa go on a date into some portraits. Courage and Muriel enter a painting of what they say looks like there house (and it is) and they sit there at home wondering where Eustace is?

After leaving a county fair, the Bagges get lost through a cornfield and crash into a scarecrow. They take him home where Muriel fixes him up and makes him a mouth so he can talk. But he becomes depressed when he isn't scary enough to frighten away Muriel's attackers, so he decides to train himself to be a much stronger and scarier scarecrow.

Muriel feels she is being watched by someone, and Courage discovers a magic kit on the porch, and after doing tricks with it, a magician named Mondo comes out and shows off his magic. He is soon discovered to be a hideous creature who traps Eustace in the TV and making Muriel his bride by turning her into the same creature.

A lady fish or fishonnary comes to take Muriel, Courage and Eustace back to "where they came from". It turns out they really go to an underwater bio-dome becausea all life originally came from the sea. These three fish judges annouce them guilty of uncivilized behavior (sipping tea, wearing shoes, etc.). So they put them in a goldfish bowl with gills that let them breathe underwater. They have to act like fish and even eat fishfood! Courage must save everyone.

Benton Tarantella, the zombie director returns to convince the Bagges to star in his latest film Angry Nasty People.

Eustace is mad they he can't grow plants, so they buy a dome that covers the house. A salesman comes to Courage, Muriel, and Eustace's home to set up dome on top of their house so produce will grow there. When they go outside to pick produce it attacks them and takes over the house. Storms build up inside the dome. Eventually Courage thinks up a plan to destroy the man-eating produce and they end up eating each other. Eustace gets to keep some of it... and the dome is removed.

Muriel, Eustace and Coruage come home to find out everything is covered in snow!! They find the Snowman has returned!!!! He has a blue thumb he uses to freeze things. He puts a huge pole in their house, and it will blot out the sun, making it snow everywhere. He succeeds, but is still sad he doesn't have any of his snowpeople friends. He says the hole in the Ozone Layer melted them and the North Pole. So Coruage goes on a plane and literally sews up the hole in the Ozone Layer!

While shopping for quilting supplies, Muriel meets the mysterious Siamese-twin Stitch sisters, who invite her to join their "quilt club"... if she can prove she's good enough! Muriel becomes obsessed with proving she's "quilt club" material, but when the Stitch sisters come over to initate her, they use their wicked magic to literally make Muriel into quilt material!

Eustace, Muriel, and Courage go to Shirley's Shop, where Muriel sees a necklace she wants. Eustace gives Shirley an oil deed for the necklace, but she realizes that it's an oil bill. Shirley gets upset for being ripped off, and casts a spell on Eustace and Muriel that causes them to swindle each other, and it's up to Courage to break the spell.

Muriel and Eustace get hypnotised by a Flan Infomercial. The whole town of Nowhere gets hypnotised. They eat Flan's food product and get fat. Courage must stop Flan so he wouldn't make any more people fat and hypnotised. Courage makes Flan eat his own product and he gets hypnotised and fat himself.

Eustace, Muriel, and Courage crash down on an island, and is welcomed by a native chief. The citizens dress Muriel in their special native clothing so she can be sacrificed to the Volcano God, who is causing the island to shake. Courage must go inside the volcano and talk to the god before the natives drop Muriel in the volcano.