an outline of the plot of a dramatic work, giving particulars as to the scenes, characters, situations, etc.

the outline or the manuscript of a motion picture or television program, giving the action in the order in which it takes place, the description of scenes and characters, etc.

an imagined or projected sequence of events, esp. any of several detailed plans or possibilities

One scenario calls for doubling profits by increasing our advertising, the other by reducing costs.

noun

book , outline , pages , plot , rsum , rundown , scheme , sides , sketch , story line , summary , synopsis , plan , screenplay , script