You are a true mastermind, always one step ahead of the opposition. You make secret master plans that insure your success. You are able to bring hidden resources into play at any appropriate time.
This is more common amongst villains than among heroes, but not unheard-of.
At any point during a scenario, you can reveal yet another well-placed resource. This can be followers, equipment, a secret weapons cache, a hidden vehicle; the only limitations are that you must have access to the resource and be able to motivate it as a part of your secret master plan.
For truly outrageous secret plans, your gamemaster might require a Fortune point; having a secret escape tunnel in your lair is reasonable, but knowing of one in the Thunder Pagoda requires some luck as well.
A master plan will never solve a plot, but it allows you to have the resources you need to set up interesting scenes and tackle difficult challenges. The main use is to avoid lengthy pauses when you have to stock up on gear and resources.