Horrid Henry's gonna be a rockstar, and no-one's going to stop him, except maybe Moody Margaret, who's up to her usual tricks.

Henry hates hiking, especially when there's a Rapper Zapper marathon on TV so he decides to show his family just how dangerous the countryside can be.

Henry is forced to be a pageboy at his cousin, Polly's wedding. However, he soon causes the wedding to turn into an unanticipated disaster.