At first, Henry has to deliver a message to Miss Oddbod from Soggy Sid. Trouble ensures when everything gets all mixed up! NOTE: This episode takes place during the events of Horrid Henry Wins the Cup, Horrid Henry: The Great Escape and Horrid Henry and the Measly Mascot, except focusing on Peter and in some cases, Fang and Fluffy at home.

Peter has had enough of Henry, so he plots his revenge on him by sending Moody Margaret a love letter. Moody Margaret decides to become a president of the free world and Henry is excited to have her out of his life. Henry and Margaret have a competition to see whose club is better - The Purple Hand Gang or The Secret Club. NOTE: This episode takes place during the events of Horrid Henry and the Measly Mascot, Horrid Henry and the Terrific Teenager and Horrid Henry Wins the Cup, except focusing on Mum and Dad and in some cases, Fang and Fluffy at home.Horrid Henry has been around for over 20 years, with over 20 million books sold. I’m surprised I’ve not read him properly before, because he’s a cool little dude. This story was previously published in an anthology, but this new stand-alone version is great because it’s perfectly designed for smaller hands getting to grips, literally and figuratively, with reading alone for the first time.

In the episode at dinnertime, during a power cut, Aunt Ruby and Steve tell Henry the story of the ghost of the rich old man who previously owned the house. This scene isn't shown in the book, with the supposed ghost's origin not discussed. However, it is mentioned that the meal was dreadful and Steve was bragging about his expensive new clothes, toys and trainers. When Prissy Polly and Vomiting Vera come to visit, Henry ends up in a situation in having to change Vera's stinky nappy. After not being allowed to go to the funfair for a bad report card at school, Henry decides to be perfect like Peter for a day. In the book, the attic has pink and blue flowered wallpaper and carpet. In the episode, it is undecorated, with wooden support beams and no carpet. Henry finds a false family tree chart, that was made to fool Henry’s dad, that claims he is a descendant of King Henry VIII.Peter is tired of being unnoticed for his good deeds, so he decides to be horrid like Henry for a day. Henry is chosen as one of the entries for the Brainbox of the Year competition, Peter stays with Great-Aunt Greta, while Mum and Dad go on a Great Escape out of Ashton. Henry completes a challenge and a part of it includes being horrid. This may not sound anything like breakfasts, but it will become clear when it comes to the show! Great-Aunt Greta babysits Peter and Henry while their parents are out for the weekend. However, Henry is up to something great and horrible.

Henry's idea of what a job is like isn't right to him. Bossy Bill, the son of Henry's dad's boss, Bossy Bob, keeps getting him in trouble. In the book, the audio tape is called Dr Jekyll's Spooky Sounds. In the episode, it appears to be a recording of Steve making ghost noises. Henry wants a new drone after seeing that Ralph has it and that he gets to miss school. The teachers also don't seem to know that Ralph is controlling a drone.

This episode seemingly implies Henry's jumper was originally Steve's as said in his quote, 'That's a very nice second-hand jumper you're wearing.' Miss Battle-Axe is acting very weird and Henry and his classmates see if Miss B has been controlled by an evil mastermind. The new dinner lady is stealing treats from everyone's lunchboxes and Henry must stop her from ruining his lunch.