Helen, Mrs. Clusky, and Helen's female classmates are at school in scout garb, reciting a chant. Then, Mrs. Clusky reveals that the Flea Island campground is open in case any of the girls wants to earn her merit badge, so Helen and Alice raise their hands.
Helen and Alice then pack for their camping trip, while Helen's dogs watch. As the girls explain to Martha how merit badges work, Ronald approaches and tells them that there is a monster named Big Minnie in the campground. The girls explain that Big Minnie is supposed to be a sasquatch-type monster, but that it's only an urban legend. As Ronald bikes away, the girls just brush him off, but Martha runs after him and asks for more information. Ronald claims that Big Minnie is hairy, with paws the size of skateboards, red eyes, and who howls at the moon and kills people.
Later, at the Lorraine house, Helen (who is packing) and Martha tell Mariella about Big Minnie. Mariella has heard of Big Minnie too, but doesn't believe in her, however, she is a bit unsure about an incident from her childhood, in which she was wrongly blamed for causing destruction on a camping trip and they never found out who or what caused it. Martha tries pulling on Helen's clothes so she won't go, but Helen insists on going. That night (before the girls have left), Martha has a nightmare in which Helen and Alice are approached by Big Minnie at the campground, so she insists on accompanying Helen as well.
The next day is the day the girls go camping, and Martha, true to her word, tags along, as does Skits. They put up their tents, and the dogs clear some brush, and then at night, the humans go to bed, but the dogs try to stay up late to guard them. They fall asleep and are awakened by howling, so they run fearfully into the girls' tent. Martha tells them that Ronald's impersonation of Big Minnie's howl sounded the same, so Alice exits the tent and discovers that it's only a recording that Ronald did of himself howling. She, Helen, and Alice scare him back by dressing as Big Minnie. Then, they go to bed, and Martha discovers that Big Minnie does exist, but thankfully, she doesn't kill anyone.
Afterwards, the girls earn their merit badges and Martha tries to tell everyone about Big Minnie. Unfortunately, no one believes her except for Skits.
This episode provides examples of
- Ambiguously Evil: Big Minnie turns out to be real, but it's unclear whether she truly kills people or not since she doesn't try to kill the campers.
- Anxiety Dreams: Martha has a nightmare about Helen and Alice being attacked by Big Minnie, since she fears that'll happen.
- Argument of Contradictions: Implied. When Martha says, "I am not afraid of the vacuum cleaner!", Skits barks at her, to which she keeps responding, "Am not!".
- Bigfoot, Sasquatch, and Yeti: Big Minnie is a large, bipedal, hairy monster who lives in the woods.
- Camping Episode: Martha, Skits, Alice, Helen, and Mrs. Clusky camp out so that Helen and Alice can earn merit badges, but Martha fears a cryptid named Big Minnie.
- Chewing the Scenery: When Ronald is demonstrating what "frightened" means, he waves his arms, yells, ducks down, and cowers.
- Cryptid Episode: The episode centres around Martha fearing a sasquatch-like monster named Big Minnie, who lives in the woods where she, Skits, Helen and Alice are camping.
- Dogs Hate Squirrels: Martha wonders if she could earn a merit badge for chasing squirrels.
- Don't Go in the Woods: Discussed. Ronald claims that the campground, which is a forested area, is inhabited by a homicidal cryptid named Big Minnie. While Big Minnie is later seen, she doesn't attack anybody.
- Dramatic Irony: The viewers see Big Minnie along with Martha, but the humans think it was all just her imagination.
- Heroic Dog: Attempted by Martha and Skits, who try to protect the girls from Big Minnie. Despite Big Minnie turning out to exist, however, the dogs don't ever need to actively save the girls.
- I Meant to Do That: When Martha yelps and runs away from Skits's growl, she claims she wasn't scared but was just practicing the escape route.
- Instantly Proven Wrong: Martha tries to claim she wasn't scared of Skits's growl and only ran away to practice the escape route... only to instantly cower when he growls again.
- Loud Gulp: Martha gulps after Ronald tells her about Big Minnie.
- "Metaphor" Is My Middle Name: Despite having no last name, Martha claims that "loyal" and "true" are her middle names because she's a dog.
- No Animals Allowed: Downplayed. Dogs technically aren't allowed on the camping trip, but Mrs. Clusky makes an exception for Martha and Skits.
- Oh, Crap!: Helen and Alice look nervous upon being approached by Big Minnie in Martha's nightmare.
- Real After All: Just before the end, Martha meets Big Minnie for real.
- Red Eyes, Take Warning: According to Ronald, Big Minnie kills people and has red eyes. We never find out if either is true, since Big Minnie is seen but doesn't kill anyone, and her eyes are not seen.
- Slapstick: In addition to Alice's klutziness, she and Mrs. Clusky get drenched when Martha and Skits shake themselves dry, then they (plus Helen) get dirt on them when the dogs dig.
- Speak in Unison: In Martha's nightmare, Helen and Alice shout at once, "It's Big Minnie! Run for your lives!".
- Totem Pole Trench: The girls and Martha pile on top of one another in a cloak to dress as Big Minnie.
- Why Did It Have to Be Snakes?: Skits claims Martha is afraid of the vacuum cleaner (though she denies it).
