Hi Gustavo
So, Kings indicate that you're to move to the next chapter of the story.
At the start, draw four cards so you get four prompts. We don't want chapters to be super-short, so if any of these four cards are Kings put them back in the deck and draw another card instead.
If you're drawing cards for prompts at any other time, drawing a King means the chapter ends.
Between rounds, we're also going to discard a couple of cards. This will take them out of play, so they don;t come up as prompts. Make sure, though, that you're not discarding Kings, otherwise you won't be able to draw them as prompts.
Hope this makes sense