Two of DC's most prominent super-teams join forces in this stunning hardcover volume collecting JUSTICE LEAGUE OF AMERICA #0 and #8-12 and Justice Society of America #5-6! In the wake of "The Tornado's Path," the JLA has discovered the existence of several members of the Legion of Super-Heroes in the present. With the help of the JSA, Superman and his team must track down all seven Legionnaires to discover why these heroes of the future have traveled back in time!