The original superhero team-up, Justice Society of America is Earth's mightiest squad of defenders whose dynamic ranks include Powergirl, Dr. Mid-Nite, Mr. Terrific, Dr. Fate and star of TV's Justice League - Hawkgirl! When Obsidian, the darkness-controlling son of Green Lantern, teams up with the mind-twisting Eclipso and hyper-powerful wizard Mordru, the Justice Society face their greatest threat to date...as the villains' combined power forces the moon from its orbit, plunging Earth into a permanent total eclipse! Now, with Earth's citizens rapidly being converted into cannon fodder for the villains' armies, it will take an incredible array of superheroes to stop them...if they can!