It's Be Nice to Your Brother Day and Henry's got the chance to win a Class Zero game if he can be nice to Peter all day.
When Peter has a sleepover, Henry decides if you can't beat them, then you just have to join them.
Henry is 'encouraged' by Dad to take a Saturday job in the local park but can't resist recruiting someone else to do it for him. Meanwhile Peter is proving that the early bird catches the worm!
Perfect Peter's perfect pen pal Super Sammy comes to stay, but is he really Super, or just downright Slimy?
Peter and Henry are playing at being gardeners, but when nature starts to take over the results are disastrous!
Horrid Henry finds a dog in his garden but can he keep him a secret for long?
Henry and Peter adopt a cat, or rather it adopts them, but they just can't decide what to call it! Henry wants to name it Buster and Peter wants to name it Tiddles. Which will win? Tiddles or Buster?
When Ralph lends Henry the yuckiest DVD ever Henry wants to watch it right away, but try as he might he just can't manage it!
Mum decides to extend her veg patch which means requisitioning Henry's fort - how is Henry going to persuade her to give up her plans?
Mum, Dad and Peter are being very secretive. Could they have something special planned? Henry certainly thinks so!
Peter's well on the way to winning the school talent contest with his rendition of 'Frere Jacques', ably assisted by his uber manager Horrid Henry. But when Moody Margaret decides she wants a piece of action she turns svengali in a ruthless display of ambition.
When Henry accidentally breaks Mum's perfume bottle he's got to replace it, and fast. But how is he going to manage it without Mum knowing?
Henry and Dad find themselves on fishing trip together, which is better than being on a shopping trip, or so they think!
Henry thinks being Headmaster for the day will be like being King for the Day - only it's not!
When Bossy Bill turns up to make Peter's life a misery, Henry decides to step in and play big brother for real.
When Henry accidentally submits a project at school that could get him grounded for life, the race is on to retrieve it before the real damage is done.
Henry's new service to the community - petsitting - comes unstuck when Henry gets over ambitious.
School uniform is being introduced to Henry's school - he just can't let this happen, but how is he going to stop it?!
When the makers of Kidswap come to town Henry thinks the idea of swapping parents is a great one - how wrong is he?!
When Prissy Polly comes to babysit, Henry finds himself in the kitchen – but will his cooking be good enough to eat?
Who would have thought that Mum, Dad, Peter and Henry could ever be the happiest family in Britain?
Horrid Henry exercising – for fun? Now there's a thought!
Great Aunt Greta comes to look after the boys, so naturally Henry takes advantage!
Henry discovers that old age is no excuse for good behaviour!
n which Horrid Henry gets married...or does he?
When Henry sees Miss B and Soggy Sid in a compromising situation he realises he could turn it to his advantage - or can he?!
The family decide to 'go green' - but not if Henry has anything to do with it!
Horrid Henry is not so happy when he gets a haircut- he's wants a haircut of his own.
Henry and Peter are off to summer camp - but it's not going to be a holiday by any means.
Henry and Ralph take a shortcut but they soon discover that it doesn't always get you there quicker!
Horrid Henry changing a nappy - just imagine!
Fang has disappeared and no one knows if he's coming back!
When Moody Margaret becomes editor of the school newspaper and Peter becomes knitting editor Henry knows there a scoop to be had, he just can't figure out where it is!
Dad and Henry are building a Go Kart, and it's going to be the biggest and the best you've ever seen!
Henry's favourite author is TJ Fizz, and today is take your kid to work day! It's mum's turn, and she works for the library, but today, a certain someone is coming there!