Siblings Susan and John arrive at Scatterbrook Farm, home of the Braithwaites, to little fanfare. It's been a poor harvest and their hosts aren't thrilled to have two amateur farmhands around the place during such lean times. No-one on Scatterbrook Farm is more troubled by the late harvest than walking, talking scarecrow Worzel Gummidge. Worzel is strictly forbidden from talking to humans, but after mistaking John and Susan for fellow scarecrows, his game is up. Worzel realises he will only save the day by going against some of his better instincts. He draws on the youthful exuberance of John and Susan, seeks the wisdom of his long-estranged Aunt Sally, and negotiates a testy deal with the frightful rooks and crows of Scatterbrook. With the help of the mystical Tree of Tree and his pet robin, Winter George, Worzel orchestrates a gathering of his fellow scarecrows on the night of the next harvest moon.
The Green Man, who creates scarecrows and is the keeper of scarecrow lore, arrives at the farm - and is not at all happy that Worzel is consorting with humans. Meanwhile, Susan and George go to visit Lady Bloomsbury Barton, who is holding a fete with a scarecrow competition that Worzel is determined to win. What will his most competitive rival, Soggy Bogart, make of it all?
Susan and John visit a scrapyard, where they meet Worzel's old friend Saucy Nancy. She is a carved ship’s figurehead, and she wants their help to get back to the sea.
It’s the build-up to Bonfire Night, and a new face has arrived in Scatterbrook. Worzel’s cousin, Guy Forks, has taken his rightful place at the top of the bonfire, but an argument between the old friends leads to a competition to prove who can do the other’s job better. With the Bonfire Night Committee distracted, Guy convinces Worzel to swap places, but it soon becomes clear that Worzel has bitten off more than he can chew. With Worzel stuck on top of the bonfire, John and Susan turn to Aunt Sally for help, but can they find a way to rescue Worzel before time runs out?
After a raging thunderstorm, a flock of rare choughs turn up at Scatterbrook Farm. Keen to seize the opportunity of scaring such a rarely sighted bird, Worzel enlists the help of Susan and John. But their plans are soon scuppered once word of the choughs gets around, and a group of avid twitchers move in before he’s even had his chance. To make matters worse, the twitchers’ arrival forces Mr B to come to face to face with his old birdwatching rival, Lee Dangerman. With the twitchers refusing to leave, can the children come up with a plan to help scare the choughs and save Worzel and Mr B from embarrassment?
Susan and John are excited when they learn that F R Peregrine’s Travelling Fair is coming to Scatterbrook for one night only. But as much as he’d love to join his friends, Worzel can’t be seen wandering around by humans. He recalls the legend of a fairground with an enchanted organ. It’s believed that, with the right music, the organ has the power to send humans to sleep so that scarecrows can enjoy the rides without the fear of being seen. At the museum, Aunt Sally finds herself agreeing to go on an adventure with another ex-fairground attraction, Calliope Jane, and it turns out Worzel isn’t the only scarecrow who wants to attend the fair... As the scarecrows descend, the risk of being seen intensifies, but will the legend of the enchanted organ turn out to be true?
