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.

When Caitlin accidentally breaks Moira’s Big Hub walkie-talkie, Mack and Bob are drafted in to help her. But with the broken walkie-talkie still in Moira’s office, ‘Sneaky Mack’, ‘Undercover Caitlin’ and ‘Fixer Bob’ need to figure out how to get it from the office and fix it before Moira gets back from her break.

Soon, a heist-like mission is under way. But keeping anything quiet from the suspicious Moira is not going to be easy. Once the intrepid three have got hold of, and fixed, the walkie-talkie, they breathe a sigh of relief. But it’s not long before Moira confronts them, and ‘Sneaky Mack’, ‘Undercover Caitlin’ and ‘Fixer Bob’ have a confession to make.
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