Piggley, Ferny, Dannan and Molly just cant resist eating one of Mrs. Winkss fresh-baked pieseven though she told them it was off limits. The friends decide to pool their creativity to bake a new pie before Mrs. Winks finds out. After much hard work - and a run-in with a feisty goat who refuses to share the apples in his orchard - the kids realize that a simple apology might have been easier and wiser in the long-run.

Piggley has a big test coming up in school and hates the thought of giving up an entire weekend to study. He decides instead to catch the legendary Salmon of Knowledge, an all-knowing fish that can help him ace the exam. While Piggley puts his faith in a questionably magical fish, Ferny and Dannan study. Ferny and Dannan are the ones who ace the test - and Piggley learns an important lesson.

Piggleys father tells him an old Irish tale about fairies disguising themselves as bugs and playing tricks on anyone who harms them. Soon Piggley and Dannan are convinced that fairies have turned Ferny into a flying beetle after he inadvertently smacks a bug on his arm. While Piggley investigates and experiments with ways to keep Ferny safe, Dannan hits the books to try and find a cure ─ and Ferny learns how much his friends care about him.

Piggleys favourite radio program, Piggley Trotter, Private Eye, inspires Piggley, Ferny and Dannan to spend many imaginative and adventurous afternoons playing detective. One particular afternoon, they work together to solve an unusual mystery: the case of what a teacher does on his day off.

Mr. Winks is going fishing and Piggley and his friends really want to go along. Dad doesn't think they're ready for the trip, so the three friends set out to prove that they're not only ready, they're also willing and able! They work hard to earn the privilege by doing chores around the farm, then they pull out all the stops and use their imagination to show Dad what excellent fishermen they will be. At last, off they all go for some early-morning fishing.

Piggley accidentally embarrasses his good friend Ferny by taking a photo of him with his pants ripped and his undies showing! After promising not to show it to anyone, the photo gets away from Piggley and is seen by everyone at school. He tries to apologize but finds that, for the first time, his best friend Ferny isnt willing to accept his apology. Piggley must use his ingenuity and creativity to regain Fernys trust and friendship ─ and Ferny must find a way to forgive.