master plan vs scenario

master plan

noun
  • A small-scale graphic outline that shows all the major elements of a project. 

  • A comprehensive document that sets out an overall strategy; the strategy itself. 

scenario

noun
  • An outline of the plot of a dramatic or literary work. 

  • An outline or model of an expected or supposed sequence of events. 

  • A screenplay itself, or an outline or a treatment of it. 

How often have the words master plan and scenario occurred in a corpus of books? (source: Google Ngram Viewer )