To start, understand what is a screenplay in a movie. A screenplay is the written plan of a film that shows the story, characters, dialogue, and actions. Simply put, what is a screenplay in film is a guide used to convert an idea into a movie. To define a screenplay, it is a scene-based script written in a fixed format that explains what happens on screen. Screenplays can be of different types of screenplay such as original or adapted stories. The main elements of a screenplay include plot, characters, scenes, and dialogue. Conclusion: Once you understand what a screenplay is and its basic elements, you can start writing by developing a clear idea and putting it into proper script format.