Another one: Once upon a time there were three kids who had to stay in a cave. So they decided to destroy the castle and build a new one. Oh, and then they got rid of the cave and killed themselves.........but they didn't make graves. Done.
once upon a time there was a rich boy and his equally rich sister, and their brother who had to sleep in a cave every night. He became evil and imprisoned the rich boy's sister in a cage, so the rich boy had to kill the evil boy by stabbing him repeatedly. This screwed up the future, by making it flicker nonstop. The end.