Batman Fortress #6 (Of 8) Cover A Darick Robertson

Having finally located the Fortress of Solitude, Batman and his hastily assembled allies quickly discover that it is as deadly as it is awe-inspiring. With an alien force holding the world hostage while the heroes hunt for Superman, can the Dark Knight find a weapon to repel the invaders? Or will his ragtag team succumb to dysfunction and betrayal before they can save the world?