Horrid Henry and the Alien Invasion

==Synopsis==
When Moody Margaret starts being nice to Henry, there can only be one explanation - she's been taken over by aliens, and Miss Battle-Axe seems to be in on the plot. Moody Margaret and her friends are all being nice. Henry suspects that they've been replaced by aliens, and the boys are probably next!
== Plot ==
Henry was in Margaret's garden setting up a prank and sees her singing while heading his way. Henry pulls down the rope, and Margaret gets splashed. Strangely, she doesn't feel anything and thanks Henry for the treacle. Henry is confused because Margaret was supposed to be angry, but then he accidentally pours the treacle on himself, causing him to scream, 'AAAAGGGHHH!!', opening the title card.
Henry tries to prank Margaret the second time from his own garden by using the Double Drencher 3000. Henry blasts it through the fence, but Margaret uses her table as a shield to prevent her from getting wet. Margaret tells Henry politely on him about cleaning the table, much to his confusion. In the living room with Fluffy, Peter is watching a program teaching how to act like a snake when Henry turns off the TV. Peter says he was watching that and Henry asks him: 'What are you going to do about it, worm?'. Peter acts like a snake, but Henry turns into a snake and tides up him, and he yells: 'MUM!'. She says, 'Don't be horrid, Henry! Leave Peter alone or go to your room!'. Peter then turns on the TV with Mutant Max telling him and Henry that aliens are taking over the world. Mutant Max mentions the girls were acting lovely have been taken over their body. Henry walks towards the TV holding the remote. Mutant Max also mentions only water can defeat the aliens. Henry then imagines Margaret being friendly and transforms into an alien and ate Henry. Henry realises Margaret being lovely and that the aliens are here. 
At night, Henry tells Mum that aliens have taken Margaret's body and they'll be taking over the world, but Mum doesn't believe Henry and tells him to have a good night sleep. Henry questions how he could sleep with an alien next door to the audience. 
Fluffy uses the TV remote to change night into day and the next morning during school, Henry tells his friends about aliens taking over Margaret's body but Ralph says she can't be an alien except a real pain. Henry responds she is because everything is lovely and they're going to take over the world. Brian claims many of them have tried, but they've all messed up. Andrew warns them that Margaret's coming. Margaret is with Susan walking over to Soraya who are all acting lovely together. Henry asks what they were going to do and Bert simply responds him 'I dunno'. Henry takes Graham's carrot sticks and gives them to Ralph to prove she's an alien. Henry tells him to wipe it on Margaret but Ralph refuses to because he'll be killed. Henry said she will just act lovely, so Ralph walks over to Margaret and trips over, splashing the carrot sticks at Margaret's hair and green jacket. Margaret asks Ralph if he's alright and says they are learning to get rid of stains in Girls’ Club. Soraya tells Susan and Margaret they don't want to keep Miss Lovely waiting and walks away. Ralph says that they're definitely aliens and Andrew asks what they are going to do. Henry is going to stop them with the help of his friends. Andrew thinks maybe being an alien is lovely but he changes the subject. Henry says they need more information and tells Ralph to come with him. 
The girls along with Gurinder and Linda are all acting lovely while walking down the corridor. Henry and Ralph are snaking behind the bins. Miss Lovely asks how they are, and they all reply, 'Lovely, Miss Lovely.'. They go to start their meeting. Henry thinks Miss Lovely's the head alien and Ralph says 'Poor Margaret. Did I just say that?' but Miss Battle-Axe catches Henry and Ralph asking them what they're doing. Henry said, 'Being lovely?'. Miss Battle-Axe is mad and sends Ralph and Henry to Miss Oddbod's office. Henry claims that Miss Battle-Axe is definitely not an alien. Henry and Ralph need someone to believe them and go to see Miss Oddbod.
Henry and Ralph try to tell Miss Oddbod but then she starts acting lovely too while listening to the song the girls are singing in distance, transforming into an alien too and they ran out of her office screaming where they run into Mr Soggington who says 'Lovely is as lovely does!' but continue running until they make it out of the school. It starts to rain which gives Henry an idea on what Mutant Max said on TV yesterday about water being the only solution to defeat the aliens and gets a plan to bring everyone outside. Henry takes a megaphone from the school cupboard and shouts 'Attention! Leave the school building!'. Ralph, Al and Bert hear Henry and alert Miss Lovely and the girls that there is an emergency and they all have to leave the school. Henry shouts ‘Everyone must leave the building!'. So Miss Lovely tells the girls who panics to walk quickly but not run.
Graham and William open the sideway doors each as Peter and his friends come out of the classroom and the boys tell them to get out fast. Mr Soggington tells the Best Boys not to panic, stay calm and walk quickly as he hears Henry giving the orders then Miss Oddbod offered to take over and tells him to go outside too. Then Henry sees Miss Oddbod's umbrella and makes a swap with the megaphone. Outside with the others, Henry and Ralph stand under the umbrella and watch the girls get all wet assuming they are shrinking. Margaret asks Henry to let her stand under his umbrella but Henry tells her to shrink like the other aliens, confusing her and Susan. Henry says it was a trick that the girls were being lovely to take over the world but Margaret laughs and calls him a dumb brain saying that they are only acting lovely to go to a fashion show with Miss Lovely who is approaching them now.
The boys see Miss Lovely, Miss Battle-Axe, Mr Soggington and Miss Oddbod coming their way. Ralph comments 'She doesn't look very lovely now.' and Henry gulps. Miss Battle-Axe asks Henry if he was responsible for luring everyone outside in the rain and they all said: 'YES!' answering her question for him but then she also says 'Well done, Henry' and announces that there was an accident in the science lab with noxious chemicals about to explode and was going to raise the alarm. Miss Lovely calls Henry a hero. At home in the kitchen, after reading the letter, Mum is proud of Henry for saving the school from exploding and lets him go watch Mutant Max on TV. However, when Henry opens the door to the living room, he sees Peter playing the same tune on his cello, acting lovely and transforming into an alien. Then Henry shouts 'NOOOOOOOOOOOOOOOO!!!' ending the episode.
==Characters ==
*Horrid Henry
*Moody Margaret
*Perfect Peter
*Mum
*Fluffy
*Rude Ralph
*Beefy Bert
*Aerobic Al
*Weepy William
*Anxious Andrew
*Goody-Goody Gordon
*Spotless Sam
*Tidy Ted
*Brainy Brian
*Greedy Graham
*Jolly Josh
*Sour Susan
*Lazy Linda
*Gorgeous Gurinder
*Singing Soraya
*Miss Lovely
*Miss Battle-Axe
*Miss Oddbod
*Mr Soggington
*Stuck-Up Steve (cameo)
*Moody Alien (In Henry's Imagination)
*Perfect Alien (In Henry's Imagination)
*Odd Alien (In Henry & Ralph's Imagination)
*Horrid Snake
*Mutant Max (On TV)
==Trivia==
*Stuck-Up Steve makes a cameo appearance in the playground after Henry evacuates the school. This is technically an error since he doesn't attend the school, and he instead attends Brick House School.
*This is the first time Miss Lovely was angry.
*This is also the first time Peter, Margaret and Miss Oddbod transform.
*Before the title card, when Henry accidentally poured a bucket of treacle on himself, instead of shouting 'NOOOOO!', he shouts 'AAAAGGGHHH!!'.
*When all of the students are outside in rain, you can see Gordon is talking with Bert instead of the Best Boys Club.
== Videos ==
File:Horrid Henry - The Alien Invasion - Cartoons For Children - Horrid Henry compilation mix - HFFE
File:Horrid Henry and the Alien Invasion
File:Horrid Henry S02E14 And The Alien Invasion-2
Category:OAS Series 2