Prequel

A prequel is like the story that happened before the one you already know. Imagine you're watching a show about a superhero who saves the day. A prequel would be a story about how the superhero became a hero, before the time when you first met them in the show. It's like a sneak peek into what happened before the story you already know. So, a prequel is like a story that takes place before the story you already know.