In an alternate universe, the Justice League is a brutal force that maintains order on Earth. This universe has its own versions of Superman, Batman, and Wonder Woman:
Superman’s clone Bizarro has become an embarrassing problem. Chaos and destruction follow Bizarro everywhere as he always hears the opposite of what is said, says the opposite of what he means and does the opposite of what is right. And when the citizens of Metropolis keep confusing Bizarro with Superman, the Man of Steel decides it’s time to find a new home for him....on another planet! It’s up to the Justice League to come to terms with their backward counterparts and team up with them to stop Darkseid and save the galaxy!
In 2021, aliens called "Heavies" invade Earth and make quick gains against a disorganized response from various nations. When the United Nations is disbanded and a united military front, the USDF (United Services Defense Force), replaces it, the aliens are driven off Earth, though thousands of their troops are left behind. A series of defensive satellites is thought to protect Earth from a second invasion. In 2033, two embedded journalists accompany reinforcements to a demilitarized zone between Pakistan and Afghanistan where Outpost 37, one of the last USDF outposts, is located. After a period of hazing, the reinforcements settle into life at the outpost.
Fifty people suddenly wake up in a darkened room, arranged in two concentric circles around a strange device. Noises sound when they attempt to move or touch the others. When someone ignores the warning and leaves formation, a beam from the device kills him. As the others panic, a man attempts to calm them. In mid-sentence, he is killed by the device. Thereafter, every two minutes, a sound signals that another person will be killed. After several people die, they realize they can vote for who dies. When nobody votes, one is selected randomly.