In Horrid Henry's Invasion, Horrid Henry and Perfect Peter keep invading each other's rooms. In Moody Margaret's Sleepover, Moody Margaret invites all the members of the Secret Club for a sleepover, with catastrophic results. In Horrid Henry's Autobiography, Miss Battle-Axe's class all have to write their autobiographies, the best to be published in the local paper. In Horrid Henry Rocks, Horrid Henry wants to go to the Killerboy Rats concert while his family want to go to the Daffy and her Dancing Daisies concert.