Molly examines her shelf of special things at the back of Mack’s stall. She chooses the tub of blue slimy stuff and remembers the day she got it.\n\nCaitlin is in her new den, but she’s in a bit of a grump and doesn’t want to share it with anyone. When Euan, Ruby and Ayesha try to get in, she becomes an even bigger grump. Ruby has dropped a book about monsters, and this gives Caitlin an idea – she’s going to pretend her den has a monster to scare the others away!\n\nMeanwhile, Moira is trying to track down a different kind of monster – a biscuit-snaffling one. She asks Bob to put a camera up in her office to find out who has been eating all her biscuits.\n\nCaitlin tells everyone about the monster. His name is Grump, and he oozes blue slimy stuff. Ayesha is very sceptical, so Caitlin borrows a tub of blue slimy stuff from Mack’s stall and smears it all around Moira’s office. She calls Ayesha in to see the slime as evidence of Grump’s existence, but Ayesha remains suspicious.\n\nMoira and Bob look through the camera footage to find the elusive biscuit snaffler. As they do, they not only discover the culprit but also see footage of Caitlin smearing the blue slimy stuff everywhere. Caitlin has to come clean and apologise to Ayesha, Ruby and Euan.
Source: CBeebies
Series 3: 4. Game Day
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the plastic hook-a-duck and remembers the day she got it.\n\nMack has organised a game ...
07-07-2025
CBeebies
Series 3: 3. Double Trouble
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the photo of Bob and Ted and remembers the day she got it.\n\nWhen Bob’s identica ...
30-06-2025
CBeebies
Series 3: 2. Sneaky Sneakers
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses a pair of walkie-talkies and remembers the day she got them.\n\nWhen Caitlin accidental ...
23-06-2025
CBeebies
Series 3: 1. James And Alice
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the love heart pencil topper and remembers the day she got it.\n\nAt the Big Hub, James ...
16-06-2025
CBeebies
Series 5: 20. Goodbye Molly And Mack
It’s Molly and Mack’s last day in the Big Hub. They both tell each other that they don’t want a goodbye party, but they really do. Caitlin has big plans, and a ...
09-06-2025
CBeebies
Series 5: 19. Kez's Big Idea
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the carrot carrier and remembers the day she got it.\n\nMack and Daisy are doing a big ...
02-06-2025
CBeebies
Series 5: 18. Mack's Challenge
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the important letter and remembers the day she got it.\n\nMack is surprised to get a le ...
26-05-2025
CBeebies
Series 5: 17. The Baby Whisperer
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the homemade beard and remembers the day she got it.\n\nJames, Alice and Molly are exha ...
19-05-2025
CBeebies
Series 5: 16. The Hairy Donkey
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the little toy donkey and remembers the day she got it.\n\nMolly and Mack are visiting ...
12-05-2025
CBeebies
Series 5: 15. The World's Greatest Granny
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the lock of purple hair and remembers the day she got it.\n\nCaitlin wants to play with ...
05-05-2025
CBeebies
Series 5: 13. Moira Takes Charge
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the empty pickle jar and remembers the day she got it.\n\nMoira’s plan to relax w ...
21-04-2025
CBeebies
Series 3: 17. Ruby's Special Day
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the sparkly cake topper and remembers the day she got it.\n\nWhen Ruby tells Molly it&r ...
04-06-2023
CBeebies
Series 1: 19. The Sleepover
Molly examines her shelf of special things at the back of Mack's stall. She chooses the wind-up torch and remembers the day she got it... \n\nThe roof above Mack's stall is leak ...
22-12-2024
CBeebies
Series 5: 9. Surprise!
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the gift bow and remembers the day she got it.\n\nIt’s Mack’s birthday, but ...
24-03-2025
CBeebies
Series 4: 14. Mini Moira
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the toy whistle and remembers the day she got it…\n\nMoira has so many things to ...
04-05-2024
CBeebies
Series 3: 15. Grasshopper Pie
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the small ‘Grasshopper Pie’ sign and remembers the day she got it.\n\nMrs J ...
28-05-2023
CBeebies
Series 5: 18. Mack's Challenge
Molly examines her shelf of special things at the back of Mack’s stall. She chooses the important letter and remembers the day she got it.\n\nMack is surprised to get a le ...
26-05-2025
CBeebies
Series 2: 3. Dad's Day Off
Molly and Mack decide that James needs some time off, as he always works so hard. James is delighted, but someone needs to look after the Kids Club for the day. It needs to be s ...
04-02-2023
CBeebies
Series 3: 13. The Library
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses the homemade library card and remembers the day she got it.\n\nMagnus has brought some ...
21-05-2023
CBeebies
Series 3: 7. Bob's Babies
Molly examines her shelf of special things at the back of Mack’s Stall. She chooses a bag of chick feed and remembers the day she got it.\n\nA yawning Bob asks Mack to hel ...
12-02-2024
CBeebies