Continuity in fiction means that the story elements and characters remain consistent from one episode or chapter to the next. Think of it like playing with toys, where all the toy pieces should fit neatly together and belong in the same make-believe world.
Just like how a puzzle can have different pieces that all come together to make a big picture, a story is made up of lots of different parts too. And we want to make sure that when we put all those parts together, they make sense and don't contradict each other.
For example, let's say we're telling a story about a character called Sarah who has long, curly hair. If suddenly in the next chapter, Sarah is suddenly bald, this would be a mistake because it doesn't make sense with what we know about her. It would be like if we were playing with a toy set and suddenly we had a dinosaur that didn't fit with the rest of our farm animals.
So, to make a good story, we need to make sure that everything fits together, and it's all part of one big world where everything makes sense. If we can do that, we can create a world that is believable and exciting for people to read or watch.