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.
Peter goes to Great-Aunt Greta's house for the weekend, to which she is still concerned that Peter is a teenager.
Netflix premiered the first 12 episodes on 15 December 2018, then 5 more episodes premiered on 14 January 2019, which will follow with the rest of the season on .
A screening of 3 new episodes was hosted by Dick and Dom in a BATFA Kids preview at the Princess Anne Royal Theatre, London on 17 November 2018.
But Henry decides that if he has to be part of it, he can at least make sure that this is the most horrible wedding…ever.