So "overtone" is an umbrella term, and there are two types of overtones: (1) "harmonic" overtones (which are integer multiples of the fundamental frequency) and (2) overtones that aren't integer multiples of the fundamental frequency (I'll call these disharmonious overtones)
Plot! Plot can change a movie and define its genre. For example, if the plot is in space and is about the future, then this would most likely be called a Sci-Fi movie. Hope this helps!
