|This article is about the series. You might be looking for the book, Horrid Henry and The Tooth Fairy.|
Henry is playing cowboy with Peter, when Peter's tooth falls off. Henry gets jealous then says that it's not fair that almost everybody except him has lost a tooth. He turn into a dinosaur then tries to eat the camera but Mum stops him. Henry snaps the photo and didn't care if Peter was not ready. Henry tries to break a tooth by eating a lot of sweets, but it doesn't work. At school, Henry borrows a toffee from Ralph and puts it in his mouth but he's having trouble opening it so Ralph helps him out. The boys pulled the toffee but it's didn't work. Then Bert appeared with a toffee on his head looking cross so Henry tries to get Bert to punch him in the mouth, but that doesn't work either. Then Ralph kicks the ball at Henry hoping that would get his tooth out but it didn't. Henry then takes away Peter's tooth and puts it under his pillow, but the next morning he finds out that Peter has got a pound instead of him which means the tooth fairy tricked him. He then realised that he needed a gap in his teeth, so he borrows one of Margaret's Dracula teeth that she used on Halloween but in return he had to be her servant. He then puts a black paper on top of his tooth. In the morning, he finds a rubber pound and a note that says "Nice try Henry!" from the tooth fairy. Henry gets caught by his mother for eating so much sweets, and bans them for a month, Henry tries to convince Dad but he decided to make it two months. His mother tells him to eat a fruit instead. His tooth gets shaky, and so he takes another bite, but he accidentally swallows his tooth and then screams "No!"
- When Henry tells Bert about why he wants him to punch him, his arms and shirt appear to be copy pasted over each other, making him have four arms.