The world has grinded to a standstill! But why? The FF and the Earth's Mightiest Heroes realize that only they can save the present, by journeying into the past! So what part does the Praxis Corporation play in our planet's plight? Who is the company's mysterious owner? And what connection does she have to one of the greatest threats to the Marvel Universe?
— Description from Comic Vine community (comicvine.gamespot.com).
