Is it haram to write fiction stories that include violence, as well as villains that do evil?

I have a story in mind that I want to write, but do not want to go against islamic law. The story would include heros and villains that would go to war , raids and pillaging, and evil things done by the villains. Would it be ok to have the villains do evil deeds but then be beat by the hero of the story that promotes good deeds, and good values.