Wembley accidentally finds the legendary Terrible Tunnel.

Red challenges Gobo's leadership.

Boober's birthday is interrupted by a disaster (and didn't he just know this was going to happen?!).

The Trash Heap decides to teach the Fraggles, Doozers and Gorgs a lesson by magically making all the radishes in the Gorg's garden disappear.

Fraggle Rock is under attack from two sides when Sprocket tries to smash his way in, and Junior Gorg tries to pulverize it.

Wembley must choose between entering Red's splash-a-thon and accompanying Gobo on a scary journey.

Through a misunderstanding, Mokey becomes the new Trash Heap.

Wembley tries to take care of a baby Tree Creature when its egg falls down the well and into the Fraggle Pond.

Ma Gorg wants a gazebo, so Junior has to get rid of the Trash Heap. Wembley and Boober have to figure out how to save her by themselves.

Boober's fun side (his Sidebottom) wants to play!

Mokey decides that she wants to be a minstrel.

Gobo and the gang trick the Gorgs into leaving the castle by impersonating the legendary Sir Hubris.

Flange and Modem Doozer get involved in a building competition (something the Doozers haven't had for many years).

Wembley can never make up his mind, until he gets Convincing John to help him.

Junior is tricked into selling the castle by the insidious Wander McMooch.

While camping far from home, Mokey and Red discover a band of Fraggles who are humorless and cruel. After Mokey is captured, both sides get ready for war!

Red and Mokey decide to find a cave and live together.

Wembley and Gobo's friendship is strained when Wembley beats Gobo in a race.

When Mokey brings a big furry caterpillar to the Rock to save her from the Gorgs, she has no idea what she's in for.

Mokey's been making too many promises lately; most notably, she was supposed to knit a tarpaulin for the Trash Heap before the next big snow. But she ends up being too late, and when she sees Philo and Gunge mourning over the frozen Marjorie, she decides she has to fix her mistake. When she overhears the Gorgs need to throw out some yucky, hot soup, she along with the help of Gobo go into the Gorg's castle to find a way to get the soup on the Trash Heap so she can thaw out.

Gobo's come down with the Pebble Pox, so it's up to Boober and Wembley to go to the Cave of Shadows to get Gobo's cure. However, Boober's not too fond of the idea, and shares his worries with Wembley along the way. Before long, Wembley comes up with a bad case of the Pebble Pox, too. Will Boober leave his sick friend behind and ditch the journey, or will Boober put his germ-worries aside to help his friends?

Philo and Gunge are sick and tired of being around Marjorie, so they decide to go off and find their home. The only problem is, they don't know where they originally came from. After a failed attempt to live in Mokey and Red's room, they travel far away, were caught and made slaves of Wander McMooch, the Trash Heap's biggest enemy. When the Fraggle Five see that Marjorie is becoming weak without her rodent duo, it's up to Gobo, Mokey, Wembley, Boober and Red to save Philo and Gunge from McMooch before it's too late.

Mokey really, really wants to be a part of the Secret Society of Poohbahs, even though Red keeps telling her it's just a silly club. Then one day Mokey gets a letter saying that the Poohbah's would like to see her and find out if she's worthy of being a part of the club. She tells Red of her invitation, only to find out that she wasn't supposed to tell anyone about it. She goes back to find out if she can be a part of the society, but when a member called the Mind-Reader knows that Mokey told her roommate of the invitation, she's immediately rejected, but the Beggler Beg and the Vanguard (who look an awful lot like Gillis Fraggle and Convincing John) say that, if she brings her roommate to verify that Mokey's legit, she can be a Poohbah. Mokey gets all worked up about this, but when she brings Red back so she can be a Poohbah, Mokey finally learns not to take anything too serious that these Fraggles tell her.

Gobo finds out about Uncle Matt's Secret Rules for Exploring through a postcard, and decides to open up a school for explorers. On his first expedition, he- along with Red, Wembley and Mokey- must travel to the Hole To Who-Knows-Where. Gobo becomes so fixated on the rules that he starts to disregard common sense, and of course, he and Red go at it again. Wembley and Mokey start to agree with Gobo's rules, but before long, they both side with Red. Gobo decides to go find the Hole To Who-Knows-Where by himself, not knowing that he is still tied on to Red. When Gobo and Red fall through the Hole, Gobo needs to use logic to get back home.

The Storyteller's having a story-telling session in Gobo's room, so Gobo decides that he wants to hear about Uncle Matt's first big journey. We see a flashback of little Matt- who's dressed like Gobo is now-with his Uncle Gobo, who thinks that his nephew Matt is annoying and clueless. Back then, Fraggles either ate mushrooms or Doozer constructions, but when the mushrooms run out, Uncle Gobo and Matt try to find some food. However, Matt causes a rock quake, and breaks Uncle Gobo's leg. So Matt goes off by himself to find food, and as he's wandering, a rock slide occurs, and when it's over, Matt finds a hole out into the Gorg's Garden. He goes out to explore, scares Ma and Pa Gorg, and brings back to the Rock a radish, which Matt thinks is a shiny red boulder, thus giving the Fraggles a new food source.

Pa Gorg decides to rid his and Ma's "Kissing Rock" of Fraggles once and for all with the Boredom Juice that Junior found, but things go horribly wrong.

Mokey is planning a trip to Wonder Mountain — alone. Red thinks Mokey is too dreamy and ethereal to be able to take care of herself, so she secretly follows Mokey in order to protect her from trouble. But it's Red who needs protection.

Uncle Matt has gotten Gobo a frog from Outer Space for his birthday, but when it gets loose while Wembley is supposed to be hiding it, things get really crazy!

The Fraggle Horn is missing, and Red tries to find it, accusing many along the way.