The synopsis, plot, characters and trivia could be found in this link: Horrid Henry's Horrid Revenge. Henry: [into the microphone that alters his voice] Peter! [Peter looks up and Henry jumped out from behind the television.] We are going to kidnap you and take you to our planet. Peter: AAAHH!! [jumps up] Space aliens! [slams onto the sofa before running out] HELP! Peter: [pokes his head into the room and whispers] Henry? Is it safe to come out? Henry: Yeah. I've chased them away. Peter: [saw what Henry was painting] Hey! Mum hasn't got a Moustache! I'm going to tell. Peter: MUM!! MUM!!! Henry: Yes!