A "World Without Superman" is a very dangerous place, indeed, and the only thing standing between the good (and not so good) folks of Earth and an impending shadow of doom are the all-new Nightwing and Flamebird! Eisner Award-winning writer Greg Rucka (FINAL CRISIS: REVELATIONS) teams with rising star Eddy Barrows (TEEN TITANS) to kick off a bold new era for ACTION COMICS!