From publisher blurb:
Nobody knows the President is really a werewolf. It’s okay, he takes pills for that. But for those who don’t—for those whose supernatural powers would endanger the populace—he calls upon...The Extra Secret Service.
The Extra Secret Service is a Backstory Cards Setting Grid to use during the Backstory Cards process. Taking turns going around the table, each player draws a Backstory Card and answers the prompt on the card, referring to the setting grid for random elements.
Think of it like a dynamic campaign or one-shot outline. The PCs are Extra Secret Service agents, part of a secret government organization that travels the country to solve crises of unnatural natures.