From publisher blurb:
In Countdown to Destruction your heroes are thrust into the middle of a supervillain's revenge plot, and must try to thwart their plans before the countdown runs out and destruction is unleashed upon the city. From simple beginnings with a break in at a strip-mall law firm the PCs will uncover and defeat a massive conspiracy to destroy the city's legal institutions and murder several of its officers.
Countdown to Destruction is a setting-agnostic introductory adventure for S.M.A.S.H., but could be used as a generic adventure for any superhero RPG with a little work.
Please note that Countdown to Destruction is now included in the revised core rulebook, so this product acts more as a preview than a separate adventure for S.M.A.S.H.